vania-janet/multiturn-rag-retrieval-data huggingface dataset:
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Transit of Venus, Sun-Earth Days 2013
There will be 36 solar eclipses from 2001-2025, of which 15 will be total eclipses on some part of Earth's surface – a little less than the average of one a year.
Transits and eclipses are rare celestial events. Transits of Venus allow astronomers to calculate more accurately the distance of Venus from the Sun, and subsequently the distances of other planets. One can see the corona or atmosphere of the Sun safely with naked eyes only during a total solar eclipse.
Gemini 12 witnessed a total solar eclipse in 1966 and the International Space Station, in 2006. The Hubble Space Telescope will be aimed at the moon to detect dips in brightness during the 2012 transit of Venus. The Solar Dynamic Observatory will capture the Sun during the 2012 transit in unprecedented detail.
A transit of Venus occurs when Venus passes directly between the Sun and the Earth. 
A solar eclipse occurs when the moon passes between the Sun and the Earth, and the moon fully or partially blocks the Sun as viewed from a location on Earth. 
Space Weather Facts

Solar flares can sometimes heat the solar surface to temperatures of 80 million F - far hotter that the sun's core!
The fastest coronal mass ejection was recorded on August 4, 1972 and traveled from the sun to earth in 14.6 hours - a speed of nearly 10 million kilometers per hour!
On April 8, 1947, the largest sunspot in modern history reached its maximum size of over 330 times Earth's area.
The most powerful solar flare in the last 500 years occurred on September 2, 1859 and was sighted by two astronomers who happened to be looking at the sun at exactly the right time!
Between May 10-12, 1999, the solar wind nearly vanished, causing Earth's magnetosphere to expand in volume by over 100 times!
A typical CME can be millions of kilometers in size, but have the mass of only a small mountain!
Some sunspots are cool enough that water vapor can form at a temperature of 1,550 C.
The most powerful aurora can generate over 1 trillion watts of power.
The March 13, 1989 Quebec blackout, the result of a major geomagnetic storm, caused a $6 billion loss to the Canadian economy.
Transit of Venus, Sun-Earth Days 2013
Transit of Venus, Sun-Earth Days 2013

Sun-Earth Days 2013

National Aeronautics and Space Administration
Goddard Space Flight Center

Visit NASA.gov
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Register

 
 

Sun-Earth Days 2013
 

 
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Eclipse Facts

The longest duration for a total solar eclipse is 7.5 minutes.
Eclipse shadows travel at 1,100 miles per hour at the equator and up to 5,000 miles per hour near the poles.
The maximum number of solar eclipses (partial, annular, or total) is 5 per year.
A total eclipse can only happen during a new moon.
Nearly identical eclipses (total, annual, or partial) occur after 18 years and 11 days, or every 6,585.32 days (Saros Cycle).
A total solar eclipse is not noticable until the Sun is more than 90 percent covered by the Moon. At 99 percent coverage, daytime lighting resembles local twilight.
The width of the Moon's shadow is at most 170 miles wide.
There are at least 2 solar eclipses per year somewhere on the Earth.
Total solar eclipses happen about once every year or two.
From the Earth's surface, the Sun's corona ("crown") can ONLY be seen during a total eclipse.
The alignment of Sun, Venus, and Earth comes in pairs that are eight years apart but separated by over a century. For example, the last pair happened in December 1874 and December 1882. The next pair would be in June 2004 and June 2012. After 2012, subsequent pairs will be in December 2117 and December 2125.
There will be 36 solar eclipses from 2001-2025, of which 15 will be total eclipses on some part of Earth's surface – a little less than the average of one a year.
Transits and eclipses are rare celestial events. Transits of Venus allow astronomers to calculate more accurately the distance of Venus from the Sun, and subsequently the distances of other planets. One can see the corona or atmosphere of the Sun safely with naked eyes only during a total solar eclipse.
NASA's Sun-Earth Day
Mon, 27 Mar 2006 11:50:00 -0500
NASA's Sun-Earth Connection Education Forum
Behind the Scenes in Side, Turkey, part 1
5:46
Sun-Earth Day 2006 focuses on March 29th's Total Solar Eclipse. In Podcast #4 we'll chat with webcast producer Robyn Higdon and Co-host Isabel Hawkins on there first day in Side, Turkey! Find out what it takes to broadcast a live celestial event from a remote location.

NASA, space, Earth, astronomy, science, solar eclipses, math, moon, total solar eclipse, Turkey, eclipse path
no

Sun-Earth Day 2006, Program 5
In this `Behind the Scenes' Podcast you will be introduced to your Location Director, Webcast Videographer and a member of our education staff. A brief description of our on-line education resources is included!
http://sunearth.gsfc.nasa.gov/podcasts/media/SED2006/SED2006_podcast5_Behind_Scenes.mp3 
 
http://sunearth.gsfc.nasa.gov/podcasts/media/SED2006/SED2006_podcast5_Behind_Scenes.mp3
Mon, 27 Mar 2006 11:55:00 -0500
NASA's Sun-Earth Connection Education Forum
Behind the Scenes in Side, Turkey, part 2
6:23
Sun-Earth Day 2006 focuses on March 29th's Total Solar Eclipse. In this `Behind the Scenes' Podcast you will be introduced to your Location Director, Webcast Videographer and a member of our education staff. A brief description of our on-line education resources is included!

NASA, space, Earth, astronomy, science, solar eclipses, math, moon, total solar eclipse, Turkey, eclipse path
no

Sun-Earth Day 2006, Program 6
In this podcast you will be introduced to two very instrumental members of the Sun-Earth Day webcast team. Senior Scientist and Cohost, Paul Doherty, describes what it is like to witness a total solar eclipse.
Education News & Blogs – NASA Jet Propulsion Laboratory
Amie: The NASA lesson that I enjoyed the most was the one we did on lunar eclipses. Much like myself, many students often have an early fascination with the Moon. Learning more about the Moon and lunar eclipses made me excited about the semester.
 Sofia Vallejo uses a foam ball and lamp to demonstrate how solar eclipses occur. Image courtesy: Brandon Rodriguez | + Expand image

What’s next for you after you finish at Cal Poly Pomona?
Jacqueline: After I graduate at Cal Poly, I plan to attend UC Riverside to complete my credential program. While I am there, I would love to get my student teaching experience. Once I complete my credential program, I plan to apply to work at schools in the Inland Empire [in Southern California]. I want to be able to give back to the communities that influenced who I am today. 
Sofia: My plans after Cal Poly are to take some time off to gain experience in the field as a substitute teacher. I also am looking to gain more volunteer experience, skills, and exposure. In the future, I want to enroll in UC Riverside to earn my teaching credential and master's degree.
Looking for ways to bring NASA STEM into your classroom or already have a great idea? The Education Office at NASA's Jet Propulsion Laboratory serves educators in the greater Los Angeles area. Contact us at education@jpl.nasa.gov.
Explore More

 
Moon Phases
Students learn about the phases of the moon by acting them out. 
Grades 1-6
Time 30-60 minutes

 

 
When Do Lunar Eclipses Happen?
Students use a paper plate to make a model that explains why lunar eclipses don’t occur during every full moon. 
Grades 4-8
Time 30-60 minutes

 

 
Modeling Crustal Folds
Students use playdough to model how Earth’s crust is bent and folded by tectonic plates over geologic time.
Grades 6-12
Time 30-60 minutes

 

TAGS: Teachers, School, Remote School, Classroom, Instruction, K-12, STEAM, Science, Math, resources, lessons

ABOUT THE AUTHOR

Brandon Rodriguez, Educator Professional Development Specialist, NASA-JPL Education Office
What Is the Sun's Corona? | NASA Space Place – NASA Science for Kids
What Is the Sun's Corona? | NASA Space Place – NASA Science for Kids

sun-corona

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What Is the Sun's Corona?

The Short Answer:

	The Sun’s corona is the outermost part of the Sun’s atmosphere. The corona is usually hidden by the bright light of the Sun's surface. That makes it difficult to see without using special instruments. However, the corona can be viewed during a total solar eclipse.
	

Our Sun is surrounded by a jacket of gases called an atmosphere. The corona is the outermost part of the Sun's atmosphere. 
The corona is usually hidden by the bright light of the Sun's surface. That makes it difficult to see without using special instruments. However, the corona can be seen during a total solar eclipse. 

Image of the solar corona during a total solar eclipse on Monday, August 21, 2017 above Madras, Oregon. Credit: NASA/Aubrey Gemignani
During a total solar eclipse, the moon passes between Earth and the Sun. When this happens, the moon blocks out the bright light of the Sun. The glowing white corona can then be seen surrounding the eclipsed Sun.

Caution!
Eye Safety During a Total Solar Eclipse
Except during the brief total phase of a total solar eclipse, when the Moon completely blocks the Sun’s bright face, it is not safe to look directly at the Sun without specialized eye protection for solar viewing.
For safety information, visit the NASA Eclipse Safety Page.

Why is the corona so dim?
The corona reaches extremely high temperatures. However, the corona is very dim. Why? The corona is about 10 million times less dense than the Sun’s surface. This low density makes the corona much less bright than the surface of the Sun.

Why is the corona so hot?

Image of corona from NASA's Solar Dynamics Observatory showing features created by magnetic fields. Image credit: NASA
The corona’s high temperatures are a bit of a mystery.
NASA's Sun-Earth Day
http://sunearth.gsfc.nasa.gov/podcasts/media/SED2006/SED2006_podcast3_jdavila.mp3 
 
http://sunearth.gsfc.nasa.gov/podcasts/media/SED2006/SED2006_podcast3_jdavila.mp3
Mon, 20 Mar 2006 14:30:00 -0500
NASA's Sun-Earth Connection Education Forum
Interview with astronomer Joe Davila
6:23
Sun-Earth Day 2006 focuses on March 29th's Total Solar Eclipse. In Podcast #3 you will hear an interview with Joe Davila; a NASA astronomer who has been working at Goddard Space flight Center since 1982. He is priMarily involved in Solar Physics and the study of our Sun's atmosphere. During his interview he talks about a very interesting and somewhat unique experiment he will be conducting in Libya during the upcoming total solar eclipse on March 29th!

NASA, space, Earth, astronomy, science, solar eclipses, math, moon, total solar eclipse, Turkey, eclipse path
no

Sun-Earth Day 2006, Program 4
In Podcast #4 we'll chat with webcast producer Robyn Higdon and Co-host Isabel Hawkins on there first day in Side, Turkey! Find out what it takes to broadcast a live celestial event from a remote location.
http://sunearth.gsfc.nasa.gov/podcasts/media/SED2006/SED2006_podcast4_Behind_Scenes.mp3 
 
http://sunearth.gsfc.nasa.gov/podcasts/media/SED2006/SED2006_podcast4_Behind_Scenes.mp3
Mon, 27 Mar 2006 11:50:00 -0500
NASA's Sun-Earth Connection Education Forum
Behind the Scenes in Side, Turkey, part 1
5:46
Sun-Earth Day 2006 focuses on March 29th's Total Solar Eclipse. In Podcast #4 we'll chat with webcast producer Robyn Higdon and Co-host Isabel Hawkins on there first day in Side, Turkey! Find out what it takes to broadcast a live celestial event from a remote location.
LP DAAC - Data Pool
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Sun - NASA Science
making heliophysics accessible to everyone.Read MoreSun StoriesMore Sun StoriesArticle5 min readHow NASA Tracked the Most Intense Solar Storm in DecadesImage Article2 min read2024 Total Solar Eclipse: Prediction vs. Reality6 min readNASA Scientists Gear Up for Solar Storms at MarsArticle4 weeks ago3 min readNASA Observations Find What Helps Heat Roots of ‘Moss’ on SunArticle1 month ago5 min readThe April 8 Total Solar Eclipse: Through the Eyes of NASAArticle1 month agoThe Sun14 ImagesGo To GalleryGo To GalleryLearn More and Get InvolvedFor Kids: All About the SunFacts and activities for K-4 explorers.NASA Photojournal: The SunImages and videos of scientific interest.Keep ExploringDiscover More Topics From NASAMercuryVenusFacts About EarthMarsReturn to topThe National Aeronautics and Space AdministrationNASA explores the unknown in air and space, innovates for the benefit of humanity, and inspires the world through discovery.About NASA's MissionJoin UsHomeNews & EventsMultimediaNASA+MissionsHumans in SpaceEarth & ClimateThe Solar SystemThe UniverseScienceAeronauticsTechnologyLearning ResourcesAbout NASANASA en EspañolFollow NASAMore NASA Social AccountsNASA NewslettersSitemapFor MediaPrivacy PolicyFOIANo FEAR ActOffice of the IGBudget & Annual ReportsAgency Financial ReportsContact NASAAccessibilityPage Last Updated:5 days agoPage Editor:SMD Content EditorsResponsible NASA Official for Science:Dana Bolles
Imagine the Universe!
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Please Note: Topic links with * next to them take you to an archive of questions & answers and other resources, but will not allow you to submit new questions.

Not sure where your question fits in? If so,

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Or type a key word or phrase into our LIBRARY SEARCH ENGINE --- your question may already have been answered on our site.

If your question does not fall onto one of the above areas, it means we are not the appropriate resource for your question.

Check out the "Who are we" page, which explains what we study, what questions we'd most like to answer, and how we fit in with the rest of NASA.
You can find other similar services by doing a web search for them or you could try doing a general web search for your question --- a lot of the things are on the web, if only you knew where to look. Here is an explanation of how to do a web search.

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NASA - NSSDCA - Experiment - Details
It will be able to take images with a resolution of 0.2 meters/pixel at a distance of 20 km.Alternate NamesDeep Impact Medium Resolution Instrument - Visible CCDDeepImpact/MRIMRIurn:nasa:pds:context:instrument:dif.mriFunding AgencyNASA-Office of Space Science Applications (United States)DisciplinePlanetary Science: Small BodiesAdditional InformationDeep Impact/EPOXIData collections from this experiment
 Questions and comments about this experiment can be directed to:
 Dr. David R. Williams PersonnelNameRoleOriginal AffiliationE-mailDr. Michael F. A'HearnPrincipal InvestigatorUniversity of MarylandSelected ReferencesHampton, D. L., et al., An Overview of the Instrument Suite for the Deep Impact Mission,
 Space Sci. Rev., 117, No. 1-2, 43-93, Mar. 2005.Wellnitz, D. D., et al., The location of the impact point of the Deep Impact Impactor on Comet 9P/Tempel 1,
 Icarus, 222, No. 2, 487-491, doi:10.1016/j.icarus.2012.08.003, Feb. 2013.NSSDCA Master Catalog Search

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Curator: E. Bell, II
Version 5.1.15, 28 October 2022
STEM Lessons for Educators – NASA Jet Propulsion Laboratory
In this illustrated math problem, students use pi to compare the area of the Hubble Space Telescope and Webb Telescope’s primary mirror.

Problem Set
Rad Reflection: A ‘Pi in the Sky’ Math Challenge

Problem Set

Rad Reflection: A ‘Pi in the Sky’ Math Challenge

In this illustrated math problem, students use pi to compare the area of the Hubble Space Telescope and Webb Telescope’s primary mirror.
	TAGS:

	MathematicsGrades 5 - 7Geometry

Problem Set
In this illustrated problem set, students use pi to calculate the size of a Mars rock sample, compare the mirrors of two space telescopes, deduce an asteroid's makeup, and size up a solar eclipse.

Problem Set
Pi in the Sky 10

Problem Set

Pi in the Sky 10

In this illustrated problem set, students use pi to calculate the size of a Mars rock sample, compare the mirrors of two space telescopes, deduce an asteroid's makeup, and size up a solar eclipse.
	TAGS:

	MathematicsGrades 5 - 12Number and Operations

Classroom Activity
Students build a spectrometer using basic materials as a model for how NASA uses spectroscopy to determine the nature of elements found on Earth and other planets.

Classroom Activity
Using Light to Study Planets

Classroom Activity

Using Light to Study Planets

Students build a spectrometer using basic materials as a model for how NASA uses spectroscopy to determine the nature of elements found on Earth and other planets.
	TAGS:

	ScienceGrades 6 - 11Light and Optics

Classroom Activity
In this cross-curricular STEM and language arts lesson, students learn about planets, stars and space missions and write STEM-inspired poetry to share their knowledge of or inspiration about these topics.

Classroom Activity
Planetary Poetry

Classroom Activity

Planetary Poetry

In this cross-curricular STEM and language arts lesson, students learn about planets, stars and space missions and write STEM-inspired poetry to share their knowledge of or inspiration about these topics.
	TAGS:

	ScienceGrades 2 - 12Solar System

Problem Set
Imagine the Universe!
From its initial results published in Feb 2003, astronomers pinpointed the age of the universe, its geometry, and when the first stars appeared.

 Tell me more about WMAP

WWW
The World Wide Web -- a loose linkage of Internet sites which provide data and other services from around the world.
X
XMM-Newton
The X-ray Multi-Mirror Mission, launched by the European Space Agency in 1999. Observation targets include quasars, gamma-ray bursts, galaxy clusters and comets. The telescope's field of view is 30 arcmin, in the energy range from 0.15 to 15 keV.
X-ray
Electromagnetic radiation of very short wavelength and very high-energy; X-rays have shorter wavelengths than ultraviolet light but longer wavelengths than gamma rays.

 Tell me more about XMM-Newton

XSELECT
A software tools used by astrophysicists in conjunction with the FTOOLS software to analyze certain types of astronomical data.
XTE
X-ray Timing Explorer, also known as the Rossi X-ray Timing Explorer (RXTE).

 Tell me more about RXTE

Y
Z
Z
The ratio of the observed change in wavelength of light emitted by a moving object to the rest wavelength of the emitted light. See Doppler Effect. This ratio is related to the velocity of the object. In general, with v = velocity of the object, c is the speed of light, lambda is the rest wavelength, and delta-lambda is the observed change in the wavelength, z is given by
z = (delta-lambda)/lambda = (sqrt(1+v/c) / sqrt(1-v/c)) - 1.
If the velocity of the object is small compared to the speed of light, then
z = (delta-lambda)/lambda = v/c
Objects at the furthest reaches of the known universe have values of z = 5 or slightly greater.

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