The fact that the cold, dry Mars of today had flowing rivers and lakes several billion years ago has puzzled scientists for ...

Mars' southern hemisphere absorbs a lot of the sun's energy during the Red Planet's spring, and that may be causing Mars' ...

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

Though it's a cold, dead planet, Mars still has its own natural beauty about it. This image shows us something we'll never see on Earth.

Known as the "Parade of Planets," the celestial event will feature appearances from Mars, Jupiter, Uranus, Venus, Neptune and ...

The 3.7-billion-year-old formations in the planet's Gale Crater suggest the presence of long-gone bodies of liquid water, ...

Experts told Newsweek about the difficulties of reaching Mars as the United States faces complex challenges in space policy.

Trump says we're going to Mars. He may be making it harder to get there. President Donald Trump says we’re going to Mars, but ...

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

Harvard scientists explain how Mars had warm spells billions of years ago, allowing rivers and lakes to exist.

where six planets align prominently in the night sky. Venus, Mars, Jupiter, and Saturn can be seen with the naked eye, while Uranus and Neptune require telescopes. This celestial event peaks on ...