An Egyptian sarcophagus shows the sky goddess Nut as being covered in stars and having a dark, undulating curve running ...

The first image of the whole Earth from space came in 1972, when astronauts Ron Evans or Harrison Schmitt took a photo from onboard Apollo 17 while headed to the Moon. This was the first time that an ...

For years, astronomers have toyed with the idea that the Sun hides an extra planet so distant and dim that even the best ...

Earth-like exoplanets might be more common throughout the Milky Way than previously believed, astronomers report in a new ...