The fact that the cold, dry Mars of today had flowing rivers and lakes several billion years ago has puzzled scientists for ...

Mars' southern hemisphere absorbs a lot of the sun's energy during the Red Planet's spring, and that may be causing Mars' ...

The northern plains of Mars, marked by thousands of mounds and hills, hold significant evidence of the planet's watery past.

Buttes and mesas in Mars' Chryse Planitia contain clay minerals made from liquid water interacting with the rock nearly 4 ...

President Donald Trump made a bold promise to America minutes after taking the Oath of Office: pledging that an American flag ...

Six planets, Mars, Jupiter, Uranus, Neptune, Venus and Saturn can be seen in the night sky. You'll need binoculars or a ...

Four planets will be in the parade in January while seven will align in February. Here's how to see the events.

Although it's being mistakenly promoted as a "rare planetary alignment," one of the best "planet parades" in half a century ...

I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the ...

Worlds will align for a "planetary parade" in January, with four bright and easily visible to the naked eye. But an even ...

Heads up! Four planets are visible in the evening sky this month, and another two planets can be found with a little help.

Planetary Parade A rare alignment of Venus, Saturn, Jupiter, Mars, Uranus, and Neptune is visible this month and into early ...