Scientists are developing a new space propulsion system that uses water as fuel, promising a more sustainable way to explore ...

YR4 has a roughly 2 percent chance of hitting Earth in 2032, and “is large enough to cause localized damage,” NASA says.

It may not look like much in this sequence of images taken by NASA's Deep Impact spacecraft from a distance of half a billion miles in January, but the comet identified as C/2012 S1 (ISON ...

The eight ripples seen by the Hubble Space Telescope in this cosmic scene marks the most ever seen in any galaxy, and data ...

Mars spacecraft teamed up with an AI model to find a new impact crater on on the Martian surface, changing our understanding ...

The smallest and most interesting comet visited so far by a NASA spacecraft, Comet Hartley 2 became the fifth cometary target of close-up photography on November 4. Remarkably clear images of Hartley ...