NASA has selected the astronauts who will blast off on new commercial space vehicles set for next year. Two of them flew on the final mission of NASA's space shuttle in 2011.
The sun is responsible for all life on Earth, but we still have a lot to learn about it. So this summer, NASA is sending the Parker Solar Probe closer to the sun than we have ever been before.
Billionaire Richard Branson wants to be on the "first official flight" to see space as a tourist by the end of 2018. His company's latest test flight reached heights of more than 32 miles.
Mars, Earth and the sun have lined up, a celestial orientation known as opposition. This is particular opposition occurs at a time when the orbit of Mars takes it closest to the sun.
The moon will turn orange or even red. And the eclipse — expected to be the longest this century — will be best to see in eastern and southern Africa, the Middle East, eastern Europe and south Asia.
Scientists say they've found what appears to be a briny lake near the south pole on Mars. It's possible that some kind of microbial life once lived in the lake.
Astronomers have found 12 more moons orbiting the planet Jupiter. These moons are all small — just 5 kilometers or less across — and one of them behaves very strangely.
Ghostly particles called neutrinos can travel nearly unimpeded across the universe. For the first time, physicists have been able to pinpoint the origin of a powerful neutrino.
The Government Accountability Office released a report warning NASA that further delays in the space agency's commercial crew program could keep American astronauts from reaching the space station.