On Earth, knowing the time feels simple. Your phone pings the same second as a GPS satellite and an atomic clock in a lab. Everything is wired together so well that you rarely think about the ...

Reading the "Mars Trilogy" by Kim Stanley Robinson brings the benefits and pitfalls of efforts to terraform the red planet ...

The mission showed that astronauts can once again travel beyond low Earth orbit.

Earth’s climate is not only shaped by smokestacks, forests, and oceans. It is also quietly tuned by the slow choreography of the planets, with Mars acting as a distant partner that nudges our world’s ...

Mars is known for its barren desert landscape and dry climate. But two recent studies in the journals Nature and Science go beneath the surface,... The core of Mars looks like Earth’s. What makes the ...

At one time, astronomers believed the surface of Mars was crisscrossed by canal systems. This in turn gave rise to speculation that Mars was very much like Earth, capable of supporting life and home ...

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 surface. So, ...

For anyone curious about what it's like to stand on another planet, Earth offers a few convincing previews. Mars may be 140 million miles away, but scientists and movie directors have been finding its ...

One day, Mars might become a home to humans. But first, there’s the cinematic, sci-fi challenge of making the Red Planet ...

Add Yahoo as a preferred source to see more of our stories on Google. Physicists have worked out exactly how fast time passes on Mars compared with Earth. (CREDIT: Wikimedia / CC BY-SA 4.0) On Earth, ...