Astronomers have discovered an Earth-size planet orbiting an ultracool red dwarf ... by the Search for habitable Planets Eclipsing Ultra-cool Stars (SPECULOOS) project located at the Paranal ...

Volcanoes are fascinating natural wonders that have both awed and frightened humans for centuries. But could these fiery ...

Climate change is already pushing Earth’s systems to the brink. And as progress toward emission reductions stalls, the idea of controlling sunlight to cool the planet may become more tempting.

NASA has discovered a new world, named Gliese 12 b. It is roughly the size of Earth, lies in the habitable zone, and orbits every 12.8 days.

Contributing Editor Korey Haynes has produced a stellar story, How we study our planet, exploring the way we use Earth-orbiting satellites to inform us about our home. The array of orbiting ...

Earth Day falls on April 22 each year but is not a federally recognized holiday, according to USA TODAY.