Scientists are working to solve a mystery of Earth’s molten outer core, which lies more than 2,000 kilometers beneath our ...

Polar bears aren't white, strawberries aren't berries and the Earth isn't round—we'll have you rethinking everything you ...

Astronomers using NASA’s James Webb Space Telescope have uncovered a rare world unlike anything in our solar system — a giant planet about the size of Saturn with surprisingly Earth-like temperatures ...

A planet that is about the size of Saturn, but with a temperature more like Earth's, has an atmosphere rich in methane, ...

NASA's exoplanet-hunting spacecraft TESS, or Transiting Exoplanet Survey Satellite, has released its most complete view of ...

Scientists have discovered a bizarre planetary system where a rocky world orbits farther out than giant gas planets, defying ...

Today we're going back… way back. Four and a half billion years to be exact. If you compressed all of Earth's history into a ...

Over billions of years, a planet will have encountered all the small bodies in its vicinity enough times to clear its orbit of them.

Earth’s surface is warming, but the upper atmosphere has been cooling for decades, and scientists now understand why.

If you have kids in school, or even if you don’t, you’ve probably realized that there’s a lot about the day-to-day of school ...

Blue sunsets, whirling dust devils, giant volcanoes, tiny moons, and marsquakes—there’s a lot to discover on Mars!

Test your knowledge of the world's cities, countries, and geographical wonders with these geography trivia questions.