New images from ESA's Biomass satellite reveal forests, volcanoes, deserts and glaciers in striking detail, hinting at what's still to come.

At any given time, about two-thirds of Earth's surface is covered by clouds. Overall, they make the planet much cooler than ...

Scenes of nebulas in the Milky Way, a cluster of galaxies and thousands of new asteroids are a teaser of how the U.S.-funded ...

Tellingly, the fossil-bearing layers contain loads of tiny glass bits called tektites—likely blobs of melted rock kicked up by the impact that solidified in the atmosphere and then rained down ...

Explore the layers of the atmosphere depicted to scale, including the Troposphere, Stratosphere, Mesosphere, Thermosphere, ...