With a radius of 2,106 miles, Mars is the seventh largest planet in our solar system and about half the diameter of Earth. Its surface gravity is 37.5 percent of Earth’s. Mars rotates on its ...

A Chinese Mars rover may have found evidence of an ancient ocean on the arid Red Planet. According to a new paper in the ...

A new study into the origins of the two Martian moons tends to blends the two most popular explanations, supercomputers had a ...

'We are basically showing that there may not have ever been a good reason to assume Mars' dynamo shut down early.' Mars' magnetic field may have survived 200 million years longer than scientists ...

Scientists have considered placing Mylar disks, with a diameter of 155 miles and a weight of 200,000 tons, to reflect sunlight onto Mars and heat the surface. The idea is that over many years ...

Judging, however, by its brilliancy, the diameter of the sec-1 ond satellite ... It will also lead to more exact data relative to the mass of Mars. In a former article on the dis covery of these ...

NASA's Mars Reconnaissance Orbiter (MRO ... a shield volcano that spans nearly over 270 miles in diameter and stands at nearly 12 miles tall (one of the largest known in the entire solar system).

The safe arrival in the United States of 7,000 photo graphs of the planet Mars is an astronomical event of no small importance. To transport a delicate lens 18 inches in diameter from New ...

Crucially, as just 14 miles (23 kilometers) and 7.5 miles (12 kilometers) in diameter, they're not massive enough to become spherical. Phobos orbits Mars three times a day and is very close to ...