QUES: Sound waves are mechanical waves. They can travel only through matter. They cannot travel through empty space. This was demonstrated in the 1600s by a scientist named Robert Boyle. Boyle placed a ticking clock in a sealed glass jar. The clock could be heard ticking through the air and glass of the jar. Then Boyle pumped the air out of the jar. The clock was still running, but the ticking could not be heard. Thats because the sound couldnt travel without air particles to transfer the sound energy. Is there any other place where sound cannot be heard? Here is a hint: is there any other place that does not have air molecules? Thats right, in space sound cannot be transferred. So can astronauts hear each other? Yes, they can, because they are in enclosed space stations or pressurized suits.In both cases, they are surrounded by air molecules. If they left their space ship and did not use their electronics, they would not be able to hear each other. Next time you watch a science fiction movie, think about this factoid. When spaceships are destroyed by hostile alien beings, there would be no sound heard. Sound waves can travel through many kinds of matter.
Do you have any questions?
MY QUESTION: How do astronauts hear each other?

QUES: (CNN) -- A Christian evangelical group said Thursday that a Bible school -- backed by American evangelist Franklin Graham -- was destroyed in the latest bombing raid to hit South Kordofan, an oil-rich Sudanese province that borders the newly created independent country of South Sudan. At least eight bombs were dropped in the area Wednesday during the school's first day of classes, according to a statement by Samaritan's Purse, Graham's Christian humanitarian group, which supports the school. Two bombs landed inside the compound -- located in the region's Nuba Mountains -- destroying two Heiban Bible College buildings and igniting grass fires across the area, the group said in a statement No injuries were reported. "It was a miracle that no one was injured," the statement added. Graham, who has called on the international community to take out Sudan's air assets and establish a no-fly zone in the region, said in a statement Thursday that he blamed Sudan's air force for the strike. At least four churches have been destroyed since August, the group said. "We are deeply concerned for the welfare and lives of the people of South Kordofan and we condemn the bombing of churches and Christian facilities," added Graham, son of the famed Rev. Billy Graham. More than 78,000 people have fled South Kordofan and Blue Nile states since August of last year after an armed rebellion took root, the United Nations reported. The Sudanese government is thought to have responded to the rebellion by conducting sustained air raids with the use of Russian-made Antonov bombers, which have raised concerns over civilian casualties. Decades of civil war between the north and south, costing as many as 2 million lives, formally ended with a U.S.-brokered peace treaty in 2005.
Do you have any questions?
MY QUESTION: Which group reported that four churches have been destroyed since August?

QUES: Alien Planet starts out with an interstellar spacecraft named Von Braun , leaving Earth's orbit . Traveling at 20 % the speed of light , it reaches Darwin IV in 42 years . Upon reaching orbit , it deploys the Darwin Reconnaissance Orbiter , Which looks for potential landing sites for the probes . The first probe , Balboa , explodes along with its lifting body transport during entry , because one of its wings failed to unfold . Two backup probes , Leonardo da Vinci and Isaac Newton , successfully land on the planet , and learn much about its bizarre indigenous lifeforms , including an apparently sapient species . The robotic probes sent out to research on Darwin IV are called Horus Probes . Each Horus probe consists of an { { convert } } long inflatable , hydrogen-filled balloon , Which is covered with solar receptors , a computer ' brain ' , a ' head ' covered with sensors , and several smaller robots that can be sent to places too dangerous for the probes themselves . The probes have a limited degree of artificial intelligence , very similar to the ' processing power ' of a 4-year-old . All the real thinking is done by a supercomputer in the orbiting Von Braun . The probes are programmed with different personalities ; Ike is more cautious , while Leo is the risk-taker . The two probes are also equipped with a holographic message that will be projected to any sentient life found on Darwin . After the two probes inflate their gas-bags , they encounter a voracious Arrowtongue and watch it pursue a Gyrosprinter .
Do you have any questions?
MY QUESTION: Which are the two probes that inflate their gas-bags?

QUES: Elaan is a declaration of war against the reign of terror unleashed by the ganglords . The story revolves around an upright and principled Police Officer , A.C.P. Ramakant Chaudhary whose eldest son Vikas is killed in a pre-planned accident . But the A.C.P. is unable to nab the culprits for want of valid evidence . Consequently , the A.C.P. , his wife Revati and younger son Vishal are griefstricken over the loss of young Vikas . While the atmosphere in the city is already vitiated by the atrocities of ganglords Baba Khan and Manna Shetty who enjoy the support of some unscrupulous police personnel , the A.C.P. vows to make the ruthless gangsters bite the dust , without taking the law in his own hands . On the other hand , Vishal an angry young man , can not stand this injustice since the police had failed to arrest his brother's killers , and he silently resents his A.C.P father's inaction in dealing with the culprits . The ideologies of the father and son clash - Which lead to a conflict between a dutiful father and a reckless son . The only one who understands the agony of Vishal is Mohini , the daughter of head constable Devkinandan Sharma . The day comes when Vishal confronts Baba Khan and Manna Shetty Which leads to tension and gory situation for the A.C.P. , as the ganglords threaten to eliminate the A.C.P. as well as his wife Revati and son Vishal .
Do you have any questions?
MY QUESTION:
What was the name of the police officer whose son was murdered and why was he unable to arrest the culprits?