Mars is an inhospitable desert planet. Billions of years ago, things were different. In Jezero Crater, for example, fed by a vast river delta, there was probably a considerable body of water roughly ...

At half the size of Earth and one-tenth its mass, Mars is a featherweight as far as planets go. And yet, new research reveals the extent to which Mars is quietly tugging on Earth’s orbit and shaping ...

(NEW YORK) — Mars is a cold, dry, desert-like planet. But billions of years ago, scientific evidence suggests that it had a thick atmosphere, which kept it warm enough to support flowing water on its ...

Before we get to Mars, we're going to have to practice. And develop radical leaps in technology, but also practice. A Mars mission will be utterly unlike anything attempted by humanity. We're talking ...

Kendra Pierre-Louis: For Scientific American’s Science Quickly, I’m Kendra Pierre-Louis, in for Rachel Feltman. In July of 2020, NASA engineers sent a rover named Perseverance hurtling into space. And ...

Add Yahoo as a preferred source to see more of our stories on Google. Under the best circumstances, a trip from Earth to Mars and back would take a spacecraft three years to complete. And that's ...

A pair of stubborn molecules, prized because they can survive deep time, just passed an important Mars test by failing a very different one on Earth. The molecules are pristane and phytane, ...