Astronomical lineups are quite common. However, what sets this month’s planetary parade apart is the number of bright planets ...

Caltech scientists published a study using NASA Curiosity rover imagery showing the past existence of warm water on Mars.

Thousands of mysterious clay mounds found on Mars were formed by ancient water on the Red Planet's barren northern plains, ...

Buttes and mesas in Mars' Chryse Planitia contain clay minerals made from liquid water interacting with the rock nearly 4 ...

Venus, Mars, Jupiter, Saturn, Uranus, and Neptune—will be visible to stargazers on 25 January. This planetary parade offers a ...

Images of Mars taken from orbit show thousands of mounds in a region sculpted by water billions of years ago. A robotic mission may investigate the area one day.

The car-sized Curiosity rover has spotted evidence of once quite hospitable environs on Mars.

Astronomers mistook a Tesla Roadster that was launched into orbit in 2018 for an asteroid earlier this month. The registry of ...

Instruments like the those currently on the Red Planet were used to study samples collected from an 'Mars-like' area in Chile ...

While claims of a “rare alignment” are overblown, you can still see up to six planets in the night sky this weekend. Here's ...

Six planets are parading across the sky, appearing as some of the night's brightest stars. A few easy tips can help you ...

A private U.S. spacecraft has captured stunning images of Earth one week into its flight. Still circling Earth, Firefly ...