Astronomers have found about 2,000 planets beyond our solar system. Now, some scientists are expanding the search to look for distant moons, too, in the hunt for signs of life.
Internet Billionaire Yuri Milner on Tuesday announced plans to travel to the nearest star system, Alpha Centauri. A trip would take thousands of years with existing technology.
Physicist Stephen Hawking and billionaire Yuri Milner have announced a $100 million mission to prepare for interstellar exploration — with a stamp-size spacecraft, light sails and enormous lasers.
A resupply capsule, bearing an inflatable habitat, is en route to the International Space Station, and the first stage of the rocket that launched it has returned for a sea landing without exploding.
On Friday, a supply rocket is scheduled to send an inflatable module to the International Space Station. The expandable technology is being developed by a private firm.
A black hole with about 17 billion times the mass of our sun has turned up in another remote galaxy. Astronomers now think these mass-eating monsters may not be so rare after all.
Before there were digital computers, there were "human computers," women who used pencils and paper to do the math that helped carry the U.S. into space. Nathalia Holt tells their story in a new book.
Bob Ebeling was one of five booster rocket engineers at a NASA contractor who tried to stop the 1986 launch of the space shuttle Challenger, which exploded 73 seconds into its flight. He was 89.