NASA's plans for Mars sample return are effectively cancelled as part of a bill approved by the U.S. Congress, ending efforts ...

"Without Mars, Earth's orbit would be missing major climate cycles. What would humans and other animals even look like if Mars weren't there?" ...

The findings potentially solve the paradox of how liquid water seems to have persisted on Mars even when the climate grew too ...

For generations, the question of whether life exists beyond Earth has captivated humanity. On Mars, faint traces in ancient ...

Plans to retrieve Marian rocks that may contain signs of extraterrestrial life appear to have been abandoned by the US ...

If scientists are able to inspect it in person, and they find that Mars was indeed once alive with microbes, we would know ...

Scientists have discovered a mysterious hole on the surface of Mars, and they have no idea what lies inside it. This pit, ...

For astronaut safety and to bolster success of the human exploration to come later, NASA needs an end-to-end demonstration of ...

Today, Mars is known as the red planet, for its rust-colored desert landscape. Once upon a time, Mars was a very different place. It had complex waterways and, possibly, ancient aliens. Researchers ...

Mars once had sprawling river systems that rivaled major watersheds on Earth, and scientists have now identified the biggest ones for the first time. Researchers mapped 16 massive drainage basins ...

The goal should be a new golden rule linking the search for life elsewhere to the spread of life beyond the bounds of Earth. Humans should expand into the cosmos in the same way that, were the ...

How did life begin on Earth? While scientists have theories, they don’t yet fully understand the precise chemical steps that led to biology, or when the first primitive life forms appeared. But what ...