We know Mars once had an active geological past, filled with water, volcanic activity, and dynamic geological changes. Now, ...

Running those numbers, Clarke and his co-authors estimate that of the mile-deep layer of water that may once have been the ...

Meteorites fall to Earth all the time — an estimated ... However, proof came when NASA's Viking landers were able to compare the composition of Mars' atmosphere with trapped gases found in ...

While one might think only comparatively gigantic impacts are strong enough to send hunks of a planet beyond its atmosphere ... pulled towards Earth. Astronomers believe Mars faced 10 events ...

The Indian Space Research Organisation’s orbiter around Mars has found that not only is Mars losing its atmosphere faster than Earth, but temperature changes in the upper atmosphere may also be ...

NASA’s Curiosity rover achieved a historic milestone by capturing the first-ever image of Earth alongside Phobos, one of Mars ...

NASA's Mars Curiosity rover captured an image of both its moon Phobos and Earth in the Martian night sky. The space agency's ...

Mars does not have a magnetosphere. Any discussion of humans ever settling the red planet can stop right there, but of course ...

Mars may have a thin atmosphere, but its skies are filled with fascinating cloud formations and dust storms. Now, thanks to a new tool called the “Mars Cloud Atlas,” both scientists and the public can ...

But Mars crust is really old and static compared to Earth's, she said ... once there was no dynamo anymore and the atmosphere was blown away by solar wind." Scientists had previously used ...

But not only that — it'll do that about 700 kilometers (435 miles) above Earth. The highest ever. To compare ... through them toreach the moon and Mars. The four astronauts on the Polaris ...