The Big Bang Theory ( season 10 ) - wikipedia The Big Bang Theory ( season 10 ) The Big Bang Theory ( season 10 ) Tenth season DVD cover art Starring Johnny Galecki Jim Parsons Kaley Cuoco Simon Helberg Kunal Nayyar Mayim Bialik Melissa Rauch Kevin Sussman Country of origin United States No. of episodes 24 Release Original network CBS Original release September 19, 2016 ( 2016 - 09 - 19 ) -- May 11, 2017 ( 2017 - 05 - 11 ) Season chronology ← Previous Season 9 Next → Season 11 List of The Big Bang Theory episodes The tenth season of the American sitcom The Big Bang Theory premiered on CBS Monday, September 19, 2016 and concluded on Thursday, May 11, 2017. It returned to its regular Thursday time slot on October 27, 2016, after Thursday Night Football on CBS. On March 12, 2014, The Big Bang Theory was renewed for an additional three years, extending it through the 2016 -- 17 season for a total of ten seasons. Contents 1 Production 2 Cast 2.1 Main cast 2.2 Recurring cast 2.3 Guest cast 3 Episodes 4 Ratings 5 References 6 External links Production Like the previous two seasons, the first five episodes of the tenth season aired on a different night due to CBS acquiring the rights to Thursday Night Football games. In May 2016, CBS announced at its annual upfront presentation that the series would begin its tenth season on Mondays, before returning to the Thursday slot once the football games ended. Filming for the tenth season began on August 16, 2016, according to posts on Instagram and Twitter by several of the cast members including Kaley Cuoco and Mayim Bialik. Several castings for the tenth season were announced before the season began airing. Variety announced on July 22, 2016, that Katey Sagal and Jack McBrayer had been cast as Penny 's mother and brother, respectively. Information about the characters was that Sagal would play Susan, who was described as stressed out and neurotic from a life with her troubled son. McBrayer would play Randall, a cheerful former drug dealer and ex-con. Entertainment Weekly reported on August 10, 2016, a week before filming began, that Dean Norris would have a multi-episode arc in the tenth season, and would be playing Colonel Williams, a tough officer from the Air Force Research Laboratory, who is interested in the men 's quantum gyroscope for military applications. On November 9, 2016, TVLine reported that Christopher Lloyd had been cast as Theodore for the season 's December 1 episode. Cast Main article : List of The Big Bang Theory characters Main cast Johnny Galecki as Dr. Leonard Hofstadter Jim Parsons as Dr. Sheldon Cooper Kaley Cuoco as Penny Simon Helberg as Howard Wolowitz Kunal Nayyar as Dr. Rajesh `` Raj '' Koothrappali Mayim Bialik as Dr. Amy Farrah Fowler Melissa Rauch as Dr. Bernadette Rostenkowski - Wolowitz Kevin Sussman as Stuart Bloom Recurring cast Christine Baranski as Dr. Beverly Hofstadter Laurie Metcalf as Mary Cooper Keith Carradine as Wyatt, Penny 's father Dean Norris as Colonel Williams Brian George as Dr. V.M. Koothrappali Brian Posehn as Bertram `` Bert '' Kibbler John Ross Bowie as Barry Kripke Pamela Adlon as Halley Guest cast Judd Hirsch as Alfred Hofstadter Katey Sagal as Susan, Penny 's mother Jack McBrayer as Randall, Penny 's brother Josh Zuckerman as Marty, Howard 's cousin Brandon Jones as The Flash Maria Canals - Barrera as Issabella Maria Concepcion Christopher Lloyd as Theodore Laura Spencer as Emily Sweeney Kate Micucci as Lucy Alessandra Torresani as Claire Katie Leclerc as Emily April Bowlby as Rebecca, Bert 's girlfriend Brian Thomas Smith as Zack Johnson, Penny 's ex-boyfriend Riki Lindhome as Ramona Nowitzki Episodes See also : List of The Big Bang Theory episodes No. overall No. in season Title Directed by Written by Original air date Prod. code U.S. viewers ( millions ) 208 `` The Conjugal Conjecture '' Mark Cendrowski Story by : Chuck Lorre & Steve Holland & Tara Hernandez Teleplay by : Steven Molaro & Eric Kaplan & Jim Reynolds September 19, 2016 ( 2016 - 09 - 19 ) T12. 15303 15.82 The gang prepares for Leonard and Penny 's second wedding ceremony. Sheldon and Leonard fear that Mary slept with Alfred the previous night, though they swear nothing happened. They do, however, plan to visit each other, irritating Beverly. Penny 's family arrives. Her mother worries that her son 's recent jail stint will cause Leonard 's family to think of them as white trash. The ceremony goes well, with Leonard and Penny declaring their love for each other, Beverly and Alfred grateful they at least made Leonard together during their relationship, and Sheldon declaring his love for the couple. Howard is contacted by Colonel Richard Williams of the Air Force Research Laboratory, who scares both him and Raj. Howard eventually agrees to meet him, but the colonel refuses to give the reason for his interest. Title reference : Everyone assuming Mary and Alfred slept together. 209 `` The Military Miniaturization '' Mark Cendrowski Story by : Chuck Lorre & Eric Kaplan & Jim Reynolds Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari September 26, 2016 ( 2016 - 09 - 26 ) T12. 15301 14.24 Leonard and Howard worry the military might try to take over the guidance system project for weaponry, but Sheldon does not. They make him promise not to talk during the meeting with Colonel Williams. The Colonel is impressed with Howard as the main brain behind the project, making Sheldon squirm. The military wants a smaller version made, perhaps in four months. Sheldon, no longer able to contain himself, promises to have it in two. Though the others are angry about such a tight deadline, they all have fun with their new lab 's retinal scanner. Meanwhile, the pharmaceutical company employees have found out Bernadette is pregnant, infuriating her as they might take her off the next big medical project. Penny admits she was the one who let this slip. Bernadette forgives her because she intends to threaten her boss with a lawsuit if she is taken off the project. Title reference : The military wanting a smaller version of the guidance system. 210 `` The Dependence Transcendence '' Mark Cendrowski Story by : Steven Molaro & Saladin K. Patterson & Tara Hernandez Teleplay by : Steve Holland & Maria Ferrari & Jeremy Howe October 3, 2016 ( 2016 - 10 - 03 ) T12. 15302 14.32 Sheldon, Leonard, and Howard are exhausted from trying to meet the Air Force 's deadline that Sheldon set into motion. In a dream, The Flash persuades Sheldon to take an energy drink. After it wears off, Sheldon is convinced he is addicted, further annoying the other two. Sheldon breaks down and admits he can not figure out the math and is n't as smart as he thought. The others comfort him. Facing Colonel Williams, they admit that they need at least two years, which is easily accepted as the military is used to contractors not meeting deadlines. Amy takes Penny to a party thrown by Bert the geologist, but they discover they are the only ones there. Bert shocks them by saying Amy is the most popular scientist at Caltech, and he falls in love with Penny. Raj tries to help Bernadette get the nursery ready, but she does n't enjoy it. She admits her lack of excitement makes her fear she can not be maternal. Raj calls his OB - GYN father, who tells Bernadette that, while she may not like babies in general, she can still love her own child. Title reference : Sheldon trying to beat his perceived caffeine addiction. 211 `` The Cohabitation Experimentation '' Mark Cendrowski Story by : Chuck Lorre & Dave Goetsch & Maria Ferrari Teleplay by : Steven Molaro & Steve Holland & Tara Hernandez October 10, 2016 ( 2016 - 10 - 10 ) T12. 15304 14.41 After a plumbing problem makes Amy 's apartment uninhabitable for five weeks, Leonard and Penny suggest Amy move into Leonard and Sheldon 's apartment. After Amy proposes their cohabitation as an experiment, Sheldon agrees to move with her into Penny 's apartment, thrilling Leonard and Penny. Amy 's first night in Sheldon 's bed is rough and she does n't get much sleep due to Sheldon 's tossing and turning. The next morning, they fight over scientific integrity, working themselves up until Amy suggests they head for Penny 's apartment to make out. After an ultrasound, Howard and Bernadette are angry that Raj knows the sex of their baby when they had elected not to find out. They have a bad night debating whether to call Raj about it. Title reference : Sheldon and Amy agree to experiment with living together. 212 5 `` The Hot Tub Contamination '' Mark Cendrowski Story by : Chuck Lorre & Maria Ferrari & Tara Hernandez Teleplay by : Steve Holland & Eric Kaplan & Jim Reynolds October 17, 2016 ( 2016 - 10 - 17 ) T12. 15305 14.20 Amy and Sheldon storm into Leonard and Penny 's apartment arguing about Sheldon requiring a bathroom schedule. To help him cool off, Penny takes Sheldon to an ice cream parlor, where he tries to hunt for a different romantic partner. Sheldon confesses he once walked in on his father with another woman, which is why he always knocks three times when entering a room now, and it makes him worry that he 'll hurt Amy one day. Penny convinces him to give the relationship a chance. Leonard coaches Amy on how to live with Sheldon. Returning, Sheldon agrees to compromise, so he does away with the bathroom schedule and agrees to share a toothbrush holder, a big step for Sheldon. After a canceled weekend away, Howard and Bernadette find Raj and Stuart secretly coming into their house and using the hot tub. They listen in as Raj reveals he is now single, but finally kick them out when Stuart says he is n't wearing a bathing suit. Title reference : Raj and Stuart secretly using Howard and Bernadette 's hot tub. 213 6 `` The Fetal Kick Catalyst '' Mark Cendrowski Story by : Steve Holland & Tara Hernandez & Jeremy Howe Teleplay by : Steven Molaro & Saladin K. Patterson & Anthony Del Broccolo October 27, 2016 ( 2016 - 10 - 27 ) T12. 15306 14.31 Sheldon throws a brunch to surprise Amy, who wanted to invite guests over ; Stuart, Bert from the geology lab, and a Romanian neighbor from downstairs attend. Stuart is insulted when he learns that the brunch was a test run before inviting others over ; Sheldon apologizes and they get drunk, complimenting each other and annoying Amy. Penny gets invited to a Van Nuys Comic - Con event to sign autographs since she starred in two Serial Apeist movies ; she is humiliated by fans deriding her poor acting ability but loving her topless shower scene. Leonard ends up holding court describing how he married such an attractive woman. Howard finally feels the baby kick. He and Raj go shopping, buying a crib and a minivan, but Howard injures his back and they drive to the ER. Title reference : Howard 's spending spree after feeling the baby kick for the first time. 214 7 `` The Veracity Elasticity '' Mark Cendrowski Story by : Steven Molaro & Eric Kaplan & Maria Ferrari Teleplay by : Steve Holland & Jim Reynolds & Adam Faberman November 3, 2016 ( 2016 - 11 - 03 ) T12. 15307 14.18 Sheldon finds out via Bernadette and Howard that Amy 's apartment was repaired two weeks ago and that Amy lied about it to keep living with him. Sheldon forgives her and wants to keep living with her, but is torn about where he really belongs. He chooses to live with Amy. Meanwhile, Penny has been secretly moving Leonard 's collectibles into storage. He confronts her, but he agrees to let her decorate their bedroom to make her feel at home, putting his stuff into Sheldon 's old room. Title reference : Amy stretching the truth about her old apartment not being habitable. 215 8 `` The Brain Bowl Incubation '' Mark Cendrowski Story by : Chuck Lorre & Steve Holland & Saladin K. Patterson Teleplay by : Steven Molaro & Maria Ferrari & Tara Hernandez November 10, 2016 ( 2016 - 11 - 10 ) T12. 15308 14.47 Amy uses skin cells from her and Sheldon to produce some primitive neurons through transdifferentiation. This inspires Sheldon to want to have a child with Amy, though she is not enthusiastic about his plan to have a child immediately. Sheldon launches a plan to seduce his girlfriend. Raj becomes attracted to Issabella, a cleaning woman at his lab, and fixes her dinner. She is insulted when she discovers that Raj told his friends that she was a fellow astronomer, but agrees to another date. Title reference : Sheldon and Amy mix their DNA and incubate some brain cells. 216 9 `` The Geology Elevation '' Mark Cendrowski Story by : Chuck Lorre & Erik Kaplan & Maria Ferrari Teleplay by : Steve Holland & Jim Reynolds & Jeremy Howe November 17, 2016 ( 2016 - 11 - 17 ) T12. 15309 14.34 Sheldon learns that Bert has won a MacArthur Fellowship prize for his work on endolithic organisms and has to deal with his professional jealousy. The rest of the group discuss their own internal jealousies. Professor Hawking calls Sheldon and explains that even he gets jealous. In order to make peace, Sheldon goes with Bert to a taping of The Ellen DeGeneres Show. Meanwhile, Howard finds a remote - controlled miniature Stephen Hawking he once built and, while everyone ( except Kripke ) thinks it is offensive, Hawking would actually like the idea. Title reference : Bert 's geology research gets more attention than Sheldon 's work. 217 10 `` The Property Division Collision '' Mark Cendrowski Story by : Steve Holland & Bill Prady & Steve Goetsch Teleplay by : Steven Molaro & Maria Ferrari & Tara Hernandez December 1, 2016 ( 2016 - 12 - 01 ) T12. 15310 14.54 After Sheldon and Amy take the ugly portrait of Penny and Amy to Leonard and Penny 's apartment, the guys start to divide up their belongings. When Sheldon tries to take everything, a dispute over the official apartment flag starts a war between Sheldon and Leonard. Sheldon rents out his old room to an old man, Theodore ( Christopher Lloyd ), who helps them to realize that Sheldon moving out is affecting both of them deeply, leading Sheldon to acquiesce regarding the flag. Stuart brings Howard and Bernadette a gift and ends up moving back in because he was evicted from his apartment. Stuart helps them with baby things to justify his moving in, starting a war with Raj who claims he was first in line to help them. Finally, Bernadette goes into labor and everyone heads to the hospital for the arrival of the baby. Title reference : Leonard and Sheldon 's dispute over dividing their belongings. 218 11 `` The Birthday Synchronicity '' Nikki Lorre Story by : Chuck Lorre & Steve Holland & Maria Ferrari Teleplay by : Steven Molaro & Eric Kaplan & Tara Hernandez December 15, 2016 ( 2016 - 12 - 15 ) T12. 15311 15.96 The impending birth of Bernadette and Howard 's baby coincides with Amy 's birthday, which interferes with Sheldon and Amy 's annual sex date. Raj accidentally reveals the baby is a girl and is kicked out of the Wolowitz house. When the time comes for the baby to be delivered, everyone waits in the lobby of the hospital. The friends all reminisce about how much has changed in ten years, though Raj feels he has done the least, which further upsets him. Halley Wolowitz is born and Raj is honored to be her godfather. The baby 's cry sounds like her grandmother, Debbie Wolowitz. After going to The Wizarding World of Harry Potter, Amy and Sheldon finally have their annual birthday coital festivities. Title reference : Halley Wolowitz is born on the same day as Amy 's birthday. 219 12 `` The Holiday Summation '' Mark Cendrowski Story by : Steven Molaro & Eric Kaplan & Tara Hernandez Teleplay by : Steve Holland & Maria Ferrari & Jeremy Howe January 5, 2017 ( 2017 - 01 - 05 ) T12. 15312 16.80 After the Christmas holiday, Sheldon and Amy tell Leonard and Penny about their visit to his mother Mary, who upset Sheldon by confessing she never thought he would find a partner. Sheldon reacted by acting anti-socially and getting his ear pierced. Also, Leonard and Penny had a series of mishaps chopping down a Christmas tree and bringing it home, while Bernadette and Howard have been struggling to cope with a constantly screaming baby. Title reference : The couples tell stories that summarize what happened to them during the holidays. 220 13 `` The Romance Recalibration '' Mark Cendrowski Story by : Chuck Lorre & Dave Goetsch & Anthony Del Broccolo Teleplay by : Steven Molaro & Steve Holland & Saladin K. Patterson January 19, 2017 ( 2017 - 01 - 19 ) T12. 15313 15.15 Penny feels Leonard is not putting enough effort into their relationship now that they are married. Leonard thinks that he is the only one putting in any effort at all. Angrily, Penny takes Amy with her to a spa weekend in lieu of Leonard. Sheldon and Leonard soon follow, solving the problem by having Sheldon create a Relationship Agreement for Leonard and Penny just like Sheldon and Amy 's. Meanwhile, Howard and Raj create a path in the baby 's room to the crib without causing the floorboards to squeak, thus disturbing baby Halley, with an overly complicated solution. Title reference : Leonard and Penny reorganizing their relationship for more romance. 221 14 `` The Emotion Detection Automation '' Mark Cendrowski Story by : Chuck Lorre & Steven Molaro & Eric Kaplan Teleplay by : Steve Holland & Jim Reynolds & Saladin K. Patterson February 2, 2017 ( 2017 - 02 - 02 ) T12. 15314 14.66 Sheldon wants to understand others ' emotions better and gets an experimental machine from MIT that reads other people for him. It reveals Leonard is angry about Penny inviting her ex-drug dealing brother to stay with them while he applies for a job at her pharmaceutical company. Sheldon is upset the machine works so well, as he feels he can not understand others himself, but Amy comforts him, proud of his progress. Leonard and Penny apologize for blaming their fight on him, while Penny still intends to blame Leonard to her family as the reason why Randall can not stay with them. Meanwhile, Raj calls together several of his ex-girlfriends to find out why he 's still single. Emily Sweeney, Lucy, Claire, and Emily the deaf woman leave him feeling down, since they all found better relationships after they dumped him. Howard promises that, if things do n't work out with Bernadette, he 'll become Raj 's partner in thirty years. Title reference : Sheldon 's machine prototype to reveal emotions. 222 15 `` The Locomotion Reverberation '' Mark Cendrowski Story by : Chuck Lorre & Steve Holland & Jim Reynolds Teleplay by : Steven Molaro & Maria Ferrari & Tara Hernandez February 9, 2017 ( 2017 - 02 - 09 ) T12. 15315 14.15 Sheldon, Leonard, and Howard are nearly finished with their guidance system for the military, but Sheldon thinks it could be even smaller. To distract him, Leonard gifts him a trip to be a train conductor in Nevada. The trip greatly excites Sheldon, becoming all he thinks about. After seeing Sheldon 's theory, Colonel Williams orders his smaller version to be made instead, so Leonard and Howard try and get him to come back, with Howard promising to teach him the mechanics of trains in exchange for his help. Meanwhile, Penny and Amy take Bernadette out to get her mind off motherhood duties, but the new baby has made Penny and Amy sad over the slow progress in their own relationships. Raj and Stuart babysit Halley while having a few minor mishaps. Title reference : The consequences of Sheldon 's train trip taking over his thoughts. 223 16 `` The Allowance Evaporation '' Mark Cendrowski Story by : Eric Kaplan & Maria Ferrari & Jeremy Howe Teleplay by : Steven Molaro & Steve Holland & Jim Reynolds February 16, 2017 ( 2017 - 02 - 16 ) T12. 15316 13.51 Sheldon and Amy are out on a date when Bert the geologist is stood up. He says he admires them other than their only having sex once a year. Amy is angry Sheldon told everyone at the university. Sheldon apologizes, now understanding the need for privacy, and also informs Amy of one of his private secrets : that he got his driver 's license two years ago, but lets her chauffeur him to feel important. Meanwhile, Raj 's father has stopped trying to find him a wife since Raj still relies on him to pay for everything. Raj 's friends make him realize he is spoiled. Raj decides to stop taking the money to prove everyone wrong, though his father is very happy. Title reference : Raj stops taking money from his father. 224 17 `` The Comic - Con Conundrum '' Mark Cendrowski Story by : Eric Kaplan & Saladin K. Patterson & Tara Hernandez Teleplay by : Steve Molaro & Steve Holland & Maria Ferrari February 23, 2017 ( 2017 - 02 - 23 ) T12. 15317 13.38 Raj appoints Sheldon as his financial manager and is told he can not afford to go to San Diego Comic - Con this year. Raj tries selling his collectibles and working for Stuart to make extra money. Howard does a bunch of chores so Bernadette will let him leave for five days. Penny says she wants to go with the guys to make Leonard happy, but they both think she 'll be miserable, leading to tension until Sheldon and Amy reveal the truth. Howard and Bernadette try to pay Raj for babysitting Halley, but he rejects the money along with his chance to go. Leonard decides to stay home to be with Penny and Howard does the same for his family. Sheldon still plans on going, confounding Amy with his attempts to have her join him. Title reference : Raj, Howard, and Leonard 's struggles with going to Comic - Con. 225 18 `` The Escape Hatch Identification '' Mark Cendrowski Story by : Steven Molaro & Eric Kaplan & Anthony Del Broccolo Teleplay by : Steve Holland & Jim Reynolds & Tara Hernandez March 9, 2017 ( 2017 - 03 - 09 ) T12. 15318 13.08 Raj can no longer afford his apartment, so Leonard and Penny temporarily give him Sheldon 's old room. This makes Sheldon uncomfortable and he calls Beverly to have her analyze why. She claims he views his old room as an escape hatch should things go wrong with Amy and that Leonard and Penny need a roommate to distract themselves from their own relationship problems. The group 's fighting leads to Raj leaving and scaring Howard, Bernadette, and Stuart in the middle of the night. The couples are able to work through their issues and Raj is invited back to stay with Leonard and Penny. Title reference : Leonard 's mother helping Sheldon find his metaphorical `` escape hatch, '' his old room in Penny and Leonard 's apartment. 226 19 `` The Collaboration Fluctuation '' Mark Cendrowski Story by : Chuck Lorre & Tara Hernandez & Giuseppe Graziano Teleplay by : Steven Molaro & Steve Holland & Dave Goetsch March 30, 2017 ( 2017 - 03 - 30 ) T12. 15319 12.78 Sheldon and Amy attempt to analyze the Copenhagen interpretation using the neurobiology of decision - making. Professionally collaborating for the first time, they try to be nice for the sake of their relationship, but their work is of poor quality. They find that insulting each other makes them more creative, so they compile a list of topics on which insults are allowed. Meanwhile, Penny and Raj bond over girly things, causing Leonard to feel left out. Howard and Bernadette suggest that he talk to them, but Raj and Penny talk over Leonard about his feelings. Title reference : Sheldon and Amy collaborating, first through cooperation, then through arguing. 227 20 `` The Recollection Dissipation '' Mark Cendrowski Story by : Eric Kaplan & Tara Hernandez & Jeremy Howe Teleplay by : Steven Molaro & Steve Holland & Maria Ferrari April 6, 2017 ( 2017 - 04 - 06 ) T12. 15320 12.59 Sheldon pushes himself to work on the guidance system with Howard and Leonard and his project with Amy on the same day. He catches a cold and wakes up the next day, half - naked and with no memory of what he did after he took cold medicine. His notebook of classified information on the military project is gone. Tracking his phone, they realize Sheldon went to a Western - themed bar. He gets the notebook back, but learns he told everyone there about the project after making them pinky swear to secrecy. Meanwhile, Bernadette feels guilty about returning to work so soon and leaving Halley. Howard thinks she is mad at him, but makes her feel better by saying that they can change their choices if they want and Halley wo n't remember this anyway. Amy performs Soft Kitty for Sheldon in different languages using an autoharp. Title reference : Sheldon losing his memory of the day. 228 21 `` The Separation Agitation '' Mark Cendrowski Story by : Steven Molaro & Jim Reynolds & Maria Ferrari Teleplay by : Steve Holland & Tara Hernandez & Jeremy Howe April 13, 2017 ( 2017 - 04 - 13 ) T12. 15321 11.89 Bert the geologist interrupts the latest `` Fun with Flags '' episode to tell everyone he has a girlfriend now, a personal trainer named Rebecca. He brings her to meet the gang, but it becomes clear that she is only with Bert for his grant money. They convince him to dump her. However, he misses her, calling `` Fun With Flags '' again to say that he got her back by purchasing her a jet ski. Meanwhile, Howard, Bernadette, and Stuart are all upset about leaving Halley at the university 's daycare. Howard and Stuart take her out the first day to go to an aquarium. Title reference : The agitation felt by separating from baby Halley. 229 22 `` The Cognition Regeneration '' Mark Cendrowski Story by : Steve Holland & Tara Hernandez & Jeremy Howe Teleplay by : Dave Goetsch & Eric Kaplan & Jim Reynolds April 27, 2017 ( 2017 - 04 - 27 ) T12. 15322 12.52 Sheldon loses his edge at online gaming and tries several new tasks to keep his mind sharp : baking with Raj, juggling with Howard, and riding a unicycle. Amy says maybe he should just focus on living well, though Sheldon wants to try stilts. Penny runs into her ex-boyfriend Zack, who offers her a job at his menu company. Penny likes the idea and Leonard reluctantly supports her. However, Zack says she can not have the job, as his fiancée thinks it is a stupid idea for him to work with an ex-girlfriend. Meanwhile, Howard is tired of Bernadette making fun of his magic tricks and finds her old ventriloquist dummy, though she uses it to scare Howard. Title reference : Sheldon trying to keep his mind sharp. 230 23 `` The Gyroscopic Collapse '' Anthony Rich Story by : Chuck Lorre & Steve Holland & Alex Ayers Teleplay by : Steven Molaro & Jim Reynolds & Saladin K. Patterson May 4, 2017 ( 2017 - 05 - 04 ) T12. 15323 12.39 Leonard, Howard and Sheldon finish their gyroscope for the Air Force, only to have it confiscated by the military for classified reasons. The loss of the project causes Howard to become clingy with Bernadette, though he reminds her she 's behaved in a similar manner after setbacks at her own job. Raj plans to move out of Leonard and Penny 's apartment, and into a room above Bert 's garage. Amy is offered a summer position as a guest researcher at Princeton. Though Sheldon initially takes the news badly, he ultimately agrees she should accept the offer. Title reference : The loss of the gyroscope project. 231 24 `` The Long Distance Dissonance '' Mark Cendrowski Story by : Steven Molaro & Eric Kaplan & Jim Reynolds Teleplay by : Chuck Lorre & Steve Holland & Tara Hernandez May 11, 2017 ( 2017 - 05 - 11 ) T12. 15324 12.99 With Amy away, Sheldon 's old admirer Dr. Ramona Nowitzki begins to hang around him at Caltech and later his home. The rest of the gang become convinced she is pursuing Sheldon, alarming Amy. They do their best to keep her away from him, even following her to her car after dinner as a group. Sheldon does n't believe Ramona is romantically interested in him, but when he asks her about it, she kisses him. Sheldon immediately departs and flies to New Jersey, proposing to Amy the second she answers the door. Title reference : Sheldon and Amy 's long distance relationship problems Ratings No. Title Air date Rating / share ( 18 -- 49 ) Viewers ( millions ) DVR ( 18 -- 49 ) DVR viewers ( millions ) Total ( 18 -- 49 ) Total viewers ( millions ) `` The Conjugal Conjecture '' September 19, 2016 3.8 / 13 15.82 2.0 5.70 5.8 21.52 `` The Military Miniaturization '' September 26, 2016 3.6 / 12 14.24 2.0 5.48 5.6 19.73 `` The Dependence Transcendence '' October 3, 2016 3.5 / 13 14.32 1.9 5.04 5.4 19.37 `` The Cohabitation Experimentation '' October 10, 2016 3.4 / 12 14.41 2.0 5.28 5.4 19.69 5 `` The Hot Tub Contamination '' October 17, 2016 3.5 / 12 14.20 1.8 4.97 5.3 19.17 6 `` The Fetal Kick Catalyst '' October 27, 2016 3.4 / 13 14.31 1.9 5.16 5.3 19.47 7 `` The Veracity Elasticity '' November 3, 2016 3.1 / 12 14.18 2.0 5.45 5.1 19.63 8 `` The Brain Bowl Incubation '' November 10, 2016 3.4 / 13 14.47 2.0 5.32 5.4 19.79 9 `` The Geology Elevation '' November 17, 2016 3.1 / 12 14.34 2.0 5.58 5.1 19.92 10 `` The Property Division Collision '' December 1, 2016 3.1 / 11 14.54 1.9 5.40 5.0 19.94 11 `` The Birthday Synchronicity '' December 15, 2016 3.4 / 13 15.96 2.0 5.30 5.4 21.26 12 `` The Holiday Summation '' January 5, 2017 3.6 / 13 16.80 1.9 5.15 5.5 21.96 13 `` The Romance Recalibration '' January 19, 2017 3.4 / 13 15.15 1.9 4.96 5.3 20.11 14 `` The Emotion Detection Automation '' February 2, 2017 3.1 / 12 14.66 1.7 4.66 4.8 19.32 15 `` The Locomotion Reverberation '' February 9, 2017 3.0 / 12 14.15 1.8 5.10 4.8 19.24 16 `` The Allowance Evaporation '' February 16, 2017 2.8 / 10 13.51 1.5 4.12 4.3 17.63 17 `` The Comic - Con Conundrum '' February 23, 2017 2.8 / 11 13.38 1.8 4.94 4.6 18.32 18 `` The Escape Hatch Identification '' March 9, 2017 2.8 / 11 13.04 1.9 4.91 4.7 17.95 19 `` The Collaboration Fluctuation '' March 30, 2017 2.6 / 11 12.78 1.6 4.40 4.2 17.18 20 `` The Recollection Dissipation '' April 6, 2017 2.7 / 11 12.59 1.5 4.51 4.2 17.11 21 `` The Separation Agitation '' April 13, 2017 2.5 / 9 11.89 1.7 4.60 4.2 16.49 22 `` The Cognition Regeneration '' April 27, 2017 2.6 / 11 12.52 1.3 3.72 3.9 16.23 23 `` The Gyroscopic Collapse '' May 4, 2017 2.5 / 11 12.39 1.5 4.18 4.0 16.57 24 `` The Long Distance Dissonance '' May 11, 2017 2.7 / 11 12.99 1.8 4.96 4.5 17.95 References ^ Jump up to : Ausiello, Michael ( June 21, 2016 ). `` CBS Fall Premiere Dates : Big Bang, NCIS, MacGyver, XL Scorpion and More ''. 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Archived from the original on August 19, 2016. Retrieved August 20, 2016. Jump up ^ Prudom, Laura ( July 22, 2016 ). `` ' The Big Bang Theory ' Casts Katey Sagal, Jack McBrayer for Season 10 ''. Variety. Archived from the original on August 16, 2016. Retrieved August 20, 2016. Jump up ^ Abrams, Natalie ( August 10, 2016 ). `` Big Bang Theory taps Dean Norris for multi-episode arc ''. Entertainment Weekly. Archived from the original on August 13, 2016. Retrieved August 20, 2016. Jump up ^ Mason, Charlie ( November 9, 2016 ). `` The Big Bang Theory : Christopher Lloyd Set to Guest - Star in Mystery Role ''. TVLine. Archived from the original on November 10, 2016. Retrieved November 9, 2016. ^ Jump up to : `` ( # BBT1010 ) `` The Property Division Collison '' ``. The Futon Critic. Retrieved November 29, 2016. ^ Jump up to : Porter, Rick ( September 20, 2016 ). `` Monday final ratings : ' Big Bang Theory ' and ' Gotham ' adjust up, ' Kevin ' and ' Good Place ' hold ''. TV by the Numbers. Archived from the original on September 21, 2016. Retrieved September 20, 2016. ^ Jump up to : Porter, Rick ( September 27, 2016 ). `` Monday final ratings : ' Big Bang Theory ' adjusts up, ' Voice ' adjusts down, final debate numbers ''. TV by the Numbers. Archived from the original on September 29, 2016. Retrieved September 27, 2016. ^ Jump up to : Porter, Rick ( October 4, 2016 ). `` ' Conviction, ' ' Timeless, ' ' Kevin ' and ' Scorpion ' all adjust down, ' Big Bang ' and ' Voice ' adjust up : Monday final ratings ''. TV by the Numbers. Archived from the original on October 5, 2016. Retrieved October 4, 2016. ^ Jump up to : Porter, Rick ( October 11, 2016 ). `` ' Timeless, ' ' Conviction, ' ' DWTS, ' ' Lucifer ' adjust down, ' Big Bang ' adjusts up : Monday final ratings ''. TV by the Numbers. Archived from the original on October 12, 2016. Retrieved October 11, 2016. ^ Jump up to : Porter, Rick ( October 18, 2016 ). `` ' Gotham, ' ' The Voice, ' ' Big Bang, ' ' DWTS ' adjust up, ' Conviction ' and ' 2 Broke Girls ' adjust down : Monday final ratings ''. TV by the Numbers. Archived from the original on October 19, 2016. Retrieved October 19, 2016. ^ Jump up to : Porter, Rick ( October 28, 2016 ). `` ' The Good Place ' and ' Chicago Med ' adjust up, ' Pure Genius, ' other CBS shows adjust down : Thursday final ratings ''. TV by the Numbers. Archived from the original on October 29, 2016. Retrieved October 28, 2016. ^ Jump up to : Porter, Rick ( November 4, 2016 ). `` ' Big Bang Theory, ' ' How to Get Away ' adjust up, ' Great Indoors ' and NBC adjust down : Thursday final ratings ''. TV by the Numbers. Archived from the original on November 5, 2016. Retrieved November 4, 2016. ^ Jump up to : Porter, Rick ( November 11, 2016 ). `` ' Chicago Med ' and NBC adjust down with NFL pre-emptions : Thursday final ratings ''. TV by the Numbers. Archived from the original on November 12, 2016. Retrieved November 11, 2016. ^ Jump up to : Welch, Alex ( November 18, 2016 ). `` ' Grey 's Anatomy ' adjusts up, ' The Great Indoors ' adjusts down : Thursday final ratings ''. TV by the Numbers. Archived from the original on November 19, 2016. Retrieved November 18, 2016. ^ Jump up to : Porter, Rick ( December 5, 2016 ). `` ' Legends of Tomorrow ' adjusts up, ' Supernatural, ' ' Great Indoors, ' ' Baking Show ' adjust down : Thursday final ratings ''. TV by the Numbers. Archived from the original on December 5, 2016. Retrieved December 5, 2016. ^ Jump up to : Porter, Rick ( December 16, 2016 ). `` ' The Great Indoors ' adjusts down, ' Big Bang ' adjusts up, final NFL numbers : Thursday final ratings ''. TV by the Numbers. Archived from the original on December 18, 2016. Retrieved December 16, 2016. ^ Jump up to : Porter, Rick ( January 9, 2017 ). `` ABC 's Menendez brothers special adjusts up : Thursday final ratings ''. TV by the Numbers. Archived from the original on January 10, 2017. Retrieved January 9, 2017. ^ Jump up to : Porter, Rick ( January 23, 2017 ). `` ' The Big Bang Theory ' ajdusts up, ' My Kitchen Rules ' adjusts down : Thursday final ratings ''. TV by the Numbers. Archived from the original on January 25, 2017. Retrieved January 23, 2017. ^ Jump up to : Porter, Rick ( February 3, 2017 ). `` ' Scandal ' adjusts down a little : Thursday final ratings ''. TV by the Numbers. Archived from the original on February 4, 2017. Retrieved February 3, 2017. ^ Jump up to : Porter, Rick ( February 10, 2017 ). `` ' Riverdale ' adjusts up ; ' Great Indoors, ' ' Powerless, ' ' Mom, ' ' Chicago Med ' down : Thursday final ratings ''. TV by the Numbers. Archived from the original on February 11, 2017. Retrieved February 10, 2017. ^ Jump up to : Porter, Rick ( February 17, 2017 ). `` ' Grey 's Anatomy, ' ' Big Bang Theory ' adjust up, ' Scandal ' adjusts down : Thursday final ratings ''. TV by the Numbers. Archived from the original on February 18, 2017. Retrieved February 17, 2017. ^ Jump up to : Porter, Rick ( February 27, 2017 ). `` ' How to Get Away with Murder ' finale, ' Training Day ' adjust down : Thursday final ratings ''. TV by the Numbers. Archived from the original on February 27, 2017. Retrieved February 27, 2017. ^ Jump up to : Porter, Rick ( March 10, 2017 ). `` ' Mom ' and NBC shows adjust down : Thursday final ratings ''. TV by the Numbers. Archived from the original on March 11, 2017. Retrieved March 10, 2017. ^ Jump up to : Porter, Rick ( March 31, 2017 ). `` ' Big Bang Theory ' adjusts up ; ' Grey 's Anatomy, ' ' Scandal, ' ' Mom, ' ' Powerless ' down : Thursday final ratings ''. TV by the Numbers. Archived from the original on April 1, 2017. Retrieved March 31, 2017. ^ Jump up to : Porter, Rick ( April 7, 2017 ). `` ' Big Bang Theory, ' ' Blacklist : Redemption ' adjust up, ' Scandal ' adjusts down : Thursday final ratings ''. TV by the Numbers. Archived from the original on April 8, 2017. Retrieved April 7, 2017. ^ Jump up to : Metcalf, Mitch ( April 14, 2017 ). `` SHOWBUZZDAILY 's Top 150 Thursday Cable Originals & Network Update : 4.13. 2017 ''. ShowBuzzDaily. Archived from the original on April 15, 2017. Retrieved April 17, 2017. ^ Jump up to : Porter, Rick ( April 28, 2017 ). `` ' Big Bang Theory, ' ' Grey 's Anatomy ' and ' Masterchef Junior ' adjust up ; ' The Catch ' adjusts down : Thursday final ratings ''. TV by the Numbers. Archived from the original on April 29, 2017. Retrieved April 28, 2017. ^ Jump up to : Porter, Rick ( May 5, 2017 ). `` ' Big Bang Theory, ' ' Grey 's Anatomy, ' ' Masterchef Junior ' adjust up, ' Riverdale ' adjusts down : Thursday final ratings ''. TV by the Numbers. Archived from the original on May 5, 2017. Retrieved May 5, 2017. ^ Jump up to : Welch, Alex ( May 12, 2017 ). `` ' The Big Bang Theory, ' ' Masterchef Junior ' adjust up, ' The Blacklist ' adjusts down : Thursday final ratings ''. TV by the Numbers. Archived from the original on May 16, 2017. Retrieved May 12, 2017. Jump up ^ Porter, Rick ( October 4, 2016 ). `` ' Designated Survivor ' is your premiere week DVR champion : Broadcast Live + 7 ratings ''. TV by the Numbers. Archived from the original on October 4, 2016. Retrieved October 4, 2016. Jump up ^ `` ' Designated Survivor ' posts more big DVR gains : Broadcast Live + 7 ratings for Sept. 26 - Oct. 2 ''. October 11, 2016. Archived from the original on October 11, 2016. Jump up ^ `` Rich get richer as ' Empire, ' ' Big Bang, ' ' Designated Survivor ' lead broadcast Live + 7 ratings for Oct. 3 - 9 ''. October 19, 2016. Archived from the original on October 20, 2016. Jump up ^ `` ' This Is Us, ' ' Big Bang, ' ' Designated Survivor ' lead broadcast Live + 7 ratings for Oct. 10 - 16 ''. October 27, 2016. Archived from the original on October 28, 2016. Jump up ^ `` ' This Is Us ' and ' Agents of SHIELD ' score in broadcast Live + 7 ratings for Oct. 17 - 23 ''. November 4, 2016. Archived from the original on November 5, 2016. Jump up ^ `` ' This Is Us, ' ' Designated Survivor ' stay on top in broadcast Live + 7 ratings for Oct. 24 - 30 ''. November 10, 2016. Archived from the original on November 11, 2016. Jump up ^ `` 13 shows double, ' This Is Us ' & ' Big Bang ' lead broadcast Live + 7 ratings for Oct. 31 - Nov. 6 ''. November 17, 2016. Archived from the original on November 18, 2016. Jump up ^ `` ' Designated Survivor ' makes more big gains in week 8 broadcast Live + 7 ratings ''. November 23, 2016. Archived from the original on November 24, 2016. Jump up ^ `` ' This Is Us, ' ' Big Bang, ' ' Designated Survivor ' are the Big Three in week 9 broadcast Live + 7 ratings ''. December 1, 2016. Archived from the original on December 1, 2016. Jump up ^ Porter, Rick ( December 21, 2016 ). `` 6 shows double in week 11 broadcast Live + 7 ratings ''. TV by the Numbers. Archived from the original on December 23, 2016. Retrieved December 21, 2016. Jump up ^ Porter, Rick ( January 3, 2017 ). `` ' Designated Survivor ' posts another double - double in week 13 broadcast Live + 7 ratings ''. TV by the Numbers. Archived from the original on January 4, 2017. Retrieved January 3, 2017. Jump up ^ Porter, Rick ( January 20, 2017 ). `` ' Big Bang Theory, ' ' The Blacklist top the week 16 broadcast Live + 7 ratings ''. TV by the Numbers. Archived from the original on January 20, 2017. Retrieved January 20, 2017. Jump up ^ Porter, Rick ( February 1, 2017 ). `` ' Agents of SHIELD ' and ' This Is Us ' make big gains in week 18 broadcast Live + 7 ratings ''. TV by the Numbers. Archived from the original on February 2, 2017. Retrieved February 1, 2017. Jump up ^ Porter, Rick ( February 15, 2017 ). `` ' Big Bang Theory, ' Agents of SHIELD ' benefit the most in week 20 broadcast Live + 7 ratings ''. TV by the Numbers. Archived from the original on February 16, 2017. Retrieved February 24, 2017. Jump up ^ Porter, Rick ( February 23, 2017 ). `` ' This Is Us ' and ' Timeless ' lead the week 21 broadcast Live + 7 ratings ''. TV by the Numbers. Archived from the original on February 23, 2017. Retrieved February 23, 2017. Jump up ^ Porter, Rick ( March 2, 2017 ). `` ' This Is Us ' and ' Agents of SHIELD ' on top again : Week 22 broadcast Live + 7 ratings ''. TV by the Numbers. Archived from the original on March 3, 2017. Retrieved March 2, 2017. Jump up ^ Porter, Rick ( March 9, 2017 ). `` ' This Is Us ' makes biggest gains again : Week 23 broadcast Live + 7 ratings ''. TV by the Numbers. Archived from the original on March 10, 2017. Retrieved May 12, 2017. Jump up ^ Porter, Rick ( March 24, 2017 ). `` ' Sleepy Hollow ' & 5 more shows double, ' This Is Us ' has biggest total gain : Week 25 broadcast Live + 7 ratings ''. TV by the Numbers. Archived from the original on May 17, 2017. Retrieved May 12, 2017. Jump up ^ Porter, Rick ( April 13, 2017 ). `` ' Designated Survivor ' scores again, 7 shows double in week 28 broadcast Live + 7 ratings ''. TV by the Numbers. Archived from the original on April 14, 2017. Retrieved May 12, 2017. Jump up ^ Porter, Rick ( April 20, 2017 ). `` ' iZombie ' premiere gets decent bump in week 29 broadcast Live + 7 ratings ''. TV by the Numbers. Archived from the original on April 20, 2017. Retrieved May 13, 2017. Jump up ^ Porter, Rick ( April 26, 2017 ). `` 6 shows double, led by ' Designated Survivor ' : Week 30 broadcast Live + 7 ratings ''. TV by the Numbers. Archived from the original on April 26, 2017. Retrieved May 13, 2017. Jump up ^ Porter, Rick ( May 6, 2017 ). `` ' The Big Bang Theory ' rules the week 32 broadcast Live + 3 ratings ''. TV by the Numbers. Archived from the original on May 7, 2017. Retrieved June 7, 2017. Jump up ^ Porter, Rick ( May 22, 2017 ). `` ' Modern Family, ' ' Big Bang ' gain the most, 10 shows double : Week 33 broadcast Live + 7 ratings ''. TV by the Numbers. Archived from the original on May 22, 2017. Retrieved June 3, 2017. Jump up ^ Porter, Rick ( May 27, 2017 ). `` ' Designated Survivor, ' ' Big Bang Theory ' finale lead week 34 's broadcast Live + 7 ratings ''. TV by the Numbers. Archived from the original on May 27, 2017. Retrieved June 3, 2017. General references `` Shows A-Z -- big bang theory, the on CBS ''. The Futon Critic. Retrieved August 14, 2014. `` The Big Bang Theory : Episode Guide ''. MSN TV. Retrieved August 14, 2014. `` The Big Bang Theory Episode Guide ''. Zap2It. Retrieved August 14, 2014. External links List of The Big Bang Theory episodes on IMDb The Big Bang Theory : Season 10 at Rotten Tomatoes The Big Bang Theory Characters Leonard Hofstadter Sheldon Cooper Penny Howard Wolowitz Raj Koothrappali Episodes Season 1 `` Pilot '' Season 2 `` The Terminator Decoupling '' Season 3 `` The Jiminy Conjecture '' Season 4 `` The Cruciferous Vegetable Amplification '' `` The Hot Troll Deviation '' `` The Love Car Displacement '' `` The Toast Derivation '' `` The Roommate Transmogrification '' Season 5 `` The Skank Reflex Analysis '' `` The Infestation Hypothesis '' `` The Wiggly Finger Catalyst '' `` The Russian Rocket Reaction '' `` The Rhinitis Revelation '' `` The Good Guy Fluctuation '' `` The Isolation Permutation '' `` The Flaming Spittoon Acquisition '' `` The Shiny Trinket Maneuver '' `` The Recombination Hypothesis '' `` The Beta Test Initiation '' `` The Werewolf Transformation '' `` The Hawking Excitation '' `` The Stag Convergence '' `` The Countdown Reflection '' Season 6 `` The Fish Guts Displacement '' `` The Santa Simulation '' `` The Egg Salad Equivalency '' Season 7 `` The Hofstadter Insufficiency '' `` The Convention Conundrum '' Season 8 `` The Locomotion Interruption '' Season 9 Season 10 Recurring concepts `` Soft Kitty '' Related articles Awards and nominations Bazinga ( genus ) Euglossa bazinga Young Sheldon Portal Book Retrieved from `` https://en.wikipedia.org/w/index.php?title=The_Big_Bang_Theory_(season_10)&oldid=802589030 '' Categories : 2016 American television seasons 2017 American television seasons The Big Bang Theory seasons Hidden categories : Use mdy dates from November 2016 Talk Contents About Wikipedia Wikiquote Čeština Deutsch Español Français Italiano 中文 Edit links This page was last edited on 27 September 2017, at 03 : 57. 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Question: when does the new season of big bang theroy start
Answer: September 19, 2016