For the first time, scientists have mapped vast, continent-scale river drainage systems on Mars — ancient networks that may ...

Dust devils on Mars form when air near the warm surface heats up and rises through cooler surrounding air, causing nearby air ...

Eight "skylights" may be entrances to underground spaces where evidence of ancient microbial organisms could be found.

For more than a century, astronomers debated the possibility of martian canali (channels) which Italian astronomer Giovanni Schiaparelli claimed to see on the Red Planet in 1877. Mistranslated into ...

Illustration of the planet Mars covered in water in the past, when its atmosphere was thicker and warmer. Now scientists may have found an unground reservoir. Is there water on Mars? Scientists using ...

NIST physicists report that clocks on Mars tick 477 microseconds faster per day due to weaker gravity and orbital effects.

We've always known Mars as the Red Planet - but it turns out, we may have had the reason why wrong. If so, it could revise much of what we know about the history of our smaller neighbor planet. In a ...

On Jan. 15, Mars will reach a point in its orbit that astronomers call opposition. That evening, Mars will lie opposite the Sun from our perspective. It will rise at sunset, reach its highest point at ...

A team of researchers with a variety of backgrounds and affiliated with multiple institutions in the U.S. has taken a realistic approach to looking at the question of whether Mars could be terraformed ...

Mars is the 4th planet from the Sun and the one that has most intrigued humanity over the years. It was named after the god of war because its reddish soil gives the planet a scarlet hue in the night ...

On the evening of Jan. 13, there will be a very special kind of eclipse of the planet Mars by the Moon. This type of eclipse is called an occultation, which occurs when the Moon or other celestial ...