When it comes to artificial intelligence, more intensive computing uses more energy, producing more greenhouse gases.

In ancient times, planet Venus was often thought to be two different stars, the evening star and the morning star — that is, the ones that first appeared at sunset and sunrise.

Our Solar System has eight planets, and each has a year of a different length. That has to do with their distance from the sun and how quickly they orbit our star.

Astronomers have discovered an Earth-size planet orbiting a red dwarf star, making just the second planetary system seen around one of these tiny, cool, dim, but common, stars.

If you're having tire trouble and limited options, you may be tempted to mix-and-match sizes, but doing so can actually cause long term damage to your car.

NASA’s planet-hunting telescope discovered an exoplanet in the habitable zone of a nearby star. It’s one of four known planets about 100 light-years away.

There’s no real “dark side” of the moon, but the far side, which faces away from Earth, is different from the near side we see every day. Samples could reveal why.

Brown says he couldn't have asked for a better telescope to hunt his celestial quarry. "If you were to hand me a big wad of cash and say, 'Go build a telescope to go either find this Planet 9 or ...

What would the consequences be if every planet in our solar system suddenly doubled in size? The answer might surprise you. Find out what would happen.