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

Maven, an acronym for Mars Atmosphere and Volatile Evolution, abruptly stopped communicating with ground stations on Dec. 6.

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.

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.

Clocks on Mars tick faster by about 477 microseconds each Earth day, a new study suggests. This difference is significantly ...

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 communication blackout temporarily silenced NASA's MAVEN orbiter, a crucial source of data on Mars' atmosphere. Engineers ...

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 ...

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 ...

In this episode, Dave Eicher invites you to observe the nearly full Moon as it passes Mars on the evening of December 17. Both objects closely follow the Sun’s apparent path through the stars, called ...