Like Earth, Mars spins at a tilt of about 25 degrees ... contains a higher concentration of dust than the south polar cap, making the ice less robust. "They're not symmetric seasons," Hansen ...

Everyone knows that Earth is capable of providing beautiful, snowy landscapes, but it isn't unique in that. It snows on Mars, ...

The above image shows a 20-meter-long chunk of frozen carbon dioxide falling off a cliff. Rising temperatures during the ...

Today, we know of Mars as a cold, dry desert, with patches of subterranean ice and ice caps at its poles. Billions of years ...

Like Earth, Mars has polar ice caps, volcanoes, canyons and deserts. This image was stitched together from a series of photos from the Viking Orbiter — one of the communications relay stations ...

There is plenty of water on Mars, but most of it is frozen in the polar ice caps and buried underground. Despite the chilly temperatures, there could be liquid water underneath the surface ice in ...

I am particularly interested in polar ice caps and their interactions with planetary atmospheres. For example, the polar deposits of Mars record striking climate changes driven by seasonal cycles, ...