Mars

A spacecraft has discovered surprises in the Red Planet's upper atmosphere

Whether it is waiting to hear about draft picks or the next release by Apple, there are many things that make enthusiasts hold their breath.

Astrobiology has one key advantage when it comes to tooting its own horn – it can lay claim to a diverse range of scientific research as being relevant to the study of life in the universe.

Shortly after 7:30 am Eastern time this morning, a seven-year space voyage at last reached its final destination: NASA's Dawn mission entered orbit around Ceres, a small, icy world orbiting the sun between Mars and Jupiter.

New maps pinpoint possible sites of the Red Planet's ancient seas and current underground reservoirs

NASA’s new space station mission is not a big step toward Mars, but mostly a holding pattern
 

Parts of this supposed vast emptiness smell like rotten eggs or gunpowder.

Ever since President George W. Bush's decision to retire the space shuttles in the aftermath 2003's Columbia disaster, NASA's human spaceflight program has been adrift.

An ancient, global-scale impact could explain the Red Planet’s mysterious “two-faced” appearance

Picture a hot volcanic spring. Mineral-laden acidic water flows through sulfur-rich rocks. A foul odor hangs in the air. For us it’s a nasty environment, best enjoyed through the lens of a tourist’s camera.

Hypotheses to explain the clouds include aurorae, dust from a volcanic eruption and water or CO2 ice particles

Some natural phenomena need few words to explain why they’re fascinating. Eclipses, transits, and phases in astronomy tend to fall into that category.