On July 20, 1976, the Viking 1 lander, an unmanned U.S. planetary probe, became the first spacecraft to successfully land on ...

Equipping spacecraft with x-ray machines could boost safety for long-duration spaceflights—like a crewed mission to Mars ...

Science has discovered around 6,000 planets, and this is the first one, other than Earth, that is rocky and has an atmosphere.

Sending humans to Mars and returning them safely to Earth would be one of the most complex endeavors that humans have ever carried out. The number of issues that must be dealt with simultaneously is ...

Four good people with the Right Stuff (plus two alternates) will be selected for the Moon and Mars Exploration Analog, or ...

Viking 1 landed on Mars 50 years ago, so why haven't we sent people there? Because there are no property rights in space ...

Terraforming Mars has crossed from science fiction to a structured scientific research agenda, according to a peer-reviewed ...

The idea of turning Mars into a planet where humans could one day live has fascinated scientists and science fiction fans for ...

This Viking 1 image is one of first images of a sunset as seen from the surface of Mars. It shows the Chryse Planitia region ...

The Viking I and II missions at the nation’s bicentennial were among the most successful missions in the annals of space ...

As Elon Musk's SpaceX prepares for the 13th flight test of its massive Starship rocket, here's everything you need to know ...