Mars at sunset reveals dozens of razor-thin atmospheric layers in stunning detail, helping scientists map dust and ice ...

We’re still feeling a bit sleepy from Sunday’s time shift, but we know the extra hours of sunlight are so worth it. (Now excuse us while we go grab some more coffee.) But we also know a cure for ...

Snapped off the coast of Australia by an Expedition 28 astronaut on the International Space Station, this is a beautiful photograph illustrating atmospheric layers. The black at the bottom of ...