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NASA said Monday it is on track to launch its Maven probe to Mars next month to find out why the Red Planet lost much of its atmosphere.

Six Chinese scientists who were banned from a NASA astronomy conference are now welcome to register, resolving an international row over academic discrimination.

Astronomers have autopsied a distant, broken apart planet and revealed signs of water and a rocky surface together for the first time, delighting scientists on the hunt for alien life.

The US space agency Thursday vowed to reconsider the applications of Chinese scientists who were denied access to a NASA conference on security grounds.

A controversial decision by NASA to bar Chinese scientists from a conference on exoplanets next month was deemed "inaccurate" Tuesday by the US congressman who wrote the law.

Hopes of finding life on Mars suffered a setback after new findings from NASA's Curiosity rover detected only trace amounts of methane gas in the Red Planet's atmosphere.

Never before has a human-built spacecraft traveled so far. NASA's Voyager 1 probe has left the solar system and is wandering the galaxy.

NASA launched an unmanned spacecraft Friday that aims to study the Moon's atmosphere, the US space agency's third lunar probe in five years.

Stargazers will be treated to a spectacular fireball show early next week when Earth hits a belt of comet debris known as the Perseids.

The dazzling success of NASA's rover Curiosity has paved the way for a human conquest of Mars, scientists say, almost one year after the groundbreaking probe first touched down on the Red Planet.

A tiny new moon has been spotted circling Neptune -- the 14th known to be orbiting the faraway planet.

The next robotic rover to explore Mars in 2020 should scour the surface of the red planet more closely than ever for signs of past life.

European astronomers said on Friday they had devised a technique to detect water in the atmosphere of planets orbiting other stars.

NASA scientists said Friday they were testing a prototype of a robot the US space agency hopes to send to Mars in 2020 in Chile's Atacama desert.

Warming ocean waters are melting the Antarctic ice shelves from the bottom up, researchers said Thursday in the first comprehensive study of the thick platforms of floating ice.

An international trio flying in a Russian capsule docked the International Space Station on Wednesday with a busy schedule full of space walks and an encounter with a pioneering US cargo craft.

Water from the world's shrinking glaciers was responsible for almost a third of the rise in sea levels between 2003 and 2009.

The ISS crew were preparing for an emergency spacewalk to fix a "very serious" leak of ammonia from the orbiting laboratory's power system seeping into space.

Orbital Sciences, one of two private US firms chosen by NASA to shuttle cargo to the International Space Station, is preparing for the first launch of its Antares rocket Wednesday.

NASA's Curiosity rover, which has been exploring Mars since it landed to much fanfare last August, is back on active status Tuesday, after a memory glitch set the robot back.
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