Life could have the time and energy to arise and prosper on Earth-like worlds in the rapidly shrinking "Goldilocks zones" ...

Astronauts Suni Williams and Butch Wilmore are back on Earth - but what has nine months in space done to them?

The Earth and a starry night appear to merge into one strange and otherworldly sci-fi trip in this mind-bending photo ...

Astronomers have discovered four planets that are just a fraction of the mass of Earth orbiting Barnard’s Star, which is 6 ...

NASA astronaut Don Pettit has published a surreal video and photograph of Earth that resembles the ending of Christopher ...

Today was a big day for SpaceX and the four astronauts returning from the International Space Station. NASA astronaut Nick ...

Scientists already know that a planet must be in the “Goldilocks zone”—not too hot and not too cold—to have liquid water, a ...

Barnard's Star is a small, dim star of the type that astronomers call red dwarfs. Consequently, even though it is one of the ...

NASA astronaut Sunita Williams returns to Earth after a nine-month mission aboard the ISS. Following her splashdown, Sunita ...