Unlike Earth’s oxygen-rich atmosphere, Mars’ is comprised mostly of carbon dioxide (CO2). Mars’ glow occurs from a breakdown in these CO2 molecules.

The European Space Agency's Trace Gas Orbiter (TGO) spotted an emerald glow in Mars' wispy atmosphere, marking the first time the phenomenon has been spotted on a world beyond Earth, a new study ...

The sky over the Bay Area has a strange yellow glow this week. There's clearly wildfire smoke in the air — as there has been for three weeks — but the sooty conditions seemed different than in ...

The Bay Area emerged Thursday from its one-day transformation into Mars, as the fiery red-orange glow that blanketed the region gave way to a more typical gray overcast. By this weekend, it may ...

This ambipolar electric field is as fundamental to Earth as gravity and the magnetic field, and is the source of the flow of atmospheric ions into space known as the polar wind.

The Atmosphere Sky claims a coverage area of up to 468 square feet (which could be your entire apartment if you’re living in a New York shoebox studio), and promises to be nearly silent. So even ...

NASA’s Curiosity rover has gulped in Martian air but failed to find methane – a gas linked to living things. But it has turned up signs that Mars may have lost much of its original atmosphere ...