On November 13, 1971, Mariner 9 became the first spacecraft to orbit Mars. At the time, scientists didn't know much about the ...

"That Mars is habitable by beings of some sort or other is as certain as it is uncertain what these beings may be," wrote Percival Lowell in the early 20th century. While other astronomers had their ...

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Sending anything to Mars is a much more difficult process than it seems. In the 1960s, the Soviet Union tried (and failed) in ...

As much as we know today about the planets of the solar system, it’s almost incomprehensible that a mere 50 years ago we knew almost nothing about them. Observations of even Mars and Venus, Earth’s ...

The images, captured by the Mars Express orbiter, reveal the volcano's southeast flank with hundreds of overlapping lava ...

Pasadena, California (CNN) — Just steps away from High Bay 1, where many of NASA’s pioneering robotic missions have been assembled, is the first image of Mars ever seen on television, broadcast in ...