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NASA's Voyager 1 approaches outer limit of solar system
The Voyager 1 spacecraft is approaching the outer limit of the solar system but remains months or even years away from the farthest reach of the sun's magnetic pull, NASA said Thursday. ... more
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Twilight for Tiangong
The return to Earth of China's Shenzhou 10 spacecraft has wrapped up an important chapter in spaceflight. China has now completed all crewed activity with Tiangong 1, the nation's first space labora ... more
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A Stepping-Stone for Oxygen on Earth
For most terrestrial life on Earth, oxygen is necessary for survival. But the planet's atmosphere did not always contain this life-sustaining substance, and one of science's greatest mysteries is ho ... more
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1 star, 3 habitable planets
A team of astronomers, including Carnegie's Paul Butler, has combined new observations with existing data to reveal a solar system packed full of planets. The star Gliese 667C is orbited by between ... more
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