The Problem with Gravity: New Mission Would Probe Strange Puzzle
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Imagine the weight of a nagging suspicion that what held your world together, a constant and consistent presence you had come to understand and rely on, wasn't what it seemed. That's how scientists feel when they ponder gravity these days.
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An international team of astronomers believe they have solved a mystery that has been perplexing scientists for 100 years -- the origin of cosmic rays.
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Whoever smelt it dealt it NASA is investigating the source of an unexplained pong which set off alarms aboard the International Space Station.â¦
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A NASA-led team is studying the construction of a railway in space for a pair of telescopes that will provide views of planet, star, and galaxy formation in unprecedented detail. The proposed Space Infrared Interferometric Telescope (SPIRIT) mission will also examine the atmospheric chemistry of giant planets around other stars.
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A proposed  NASA mission to study a mysterious force thought to be accelerating the  expansion of the universe should be the first in the agency&#39;s &quot;Beyond  Einstein&quot; program to be developed and launched, the National Research  Council recommended today.
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By Martin Merzer, The Miami Herald  Sep. 19--An unexplained object that apparently separated from shuttle Atlantis forced NASA to delay the crew's return to Earth by at least a day, mission managers said today.   The object could be as benign as a piece of ice or a small tool.
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Scientists give details of a new mission to investigate colossal explosions on the surface of the Sun.
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NASA is wrestling with a potentially dangerous problem in a spacecraft that has not even been built yet.
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UK physicists have completed the first crucial element of an experimental device designed to probe the forces that shape our Universe.
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The shuttle Discoveryâs mission involves challenging construction work aboard the International Space Station.
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Also: Stephen Hawking's next goal: Space travel. Read these stories and more from around the Web on News.com Extra.
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UK physicists finish a crucial element of a device that will probe the forces that shape our Universe.
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By RASHA MADKOUR  HOUSTON - Anyone who's ever tried to fold a well-used map can probably relate to the challenge Discovery astronauts face in the next phase of their mission.
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Scientists believe they could be a step closer to solving the mystery of how the first birds took to the air.
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Two scientists beat a $600 million Nasa mission to be first to measure a prediction of Einstein's relativity theory.
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Astronomers have produced the first truly useful image ever of something in space using gamma rays. It's a picture only an astronomer could love, but it appears to help solve a century-long mystery.
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A supernova that seems to break the laws of physics presents a challenge to our understanding of dark energy.