Kate Rubins was supposed to depart the International Space Station in time for the U.S. presidential election, but her homecoming has been delayed. She may have to cast an absentee ballot from space.
Last week, China's space program announced that the Tiangong-1 will be falling through the atmosphere in late 2017. Observers have speculated for months that China had lost control of the lab.
Blobs in space emitting eerie, unexplained light have been puzzling astronomers for more than 15 years. Now, they think they are on to the cause of the mysterious glow.
Flying people to an asteroid is really hard, so NASA wants to bring part of it to them. But some former astronauts say the $2 billion plan was born of politics and budget cuts, and makes little sense.
Big Data is everywhere — even the skies. Astronomer Andrew Connolly shows how large amounts of data are being collected about our universe, and how it will help lead to new discoveries.
The mission aims to circle a hill-sized asteroid for two years, then skim its surface and bring a hearty sample of 4.5 billion-year-old dirt back to Earth.
The celestial body was discovered in the same year Mercury died at age 45. It was dedicated to the singer in honor of what would have been his 70th birthday, his bandmate Brian May announced.
The lander was the first to ever set down on a comet — but couldn't get enough sunlight to recharge its batteries, and went into hibernation. New images show Philae stuck in a crack.