Which planet is the furthest from the sun? Some may think it’s Pluto, but it’s actually Neptune. Learn more about this ice ...

A planet's year length depends on its distance from the Sun. Planets closer to the Sun have shorter years. A planet's rotation speed is unrelated to its year length. Planets' orbital speeds vary ...

Just because Pluto was ruled out as a planet in 2006 doesn’t mean our solar system only has eight planets. The search for Planet Nine is far from over as scientists continue to uncover clues ...

Meet exoplanet Kepler-1649c — it’s the same size as Earth, and its distance from its sun is just right for life — and that may NOT be a good thing. Sitting roughly 300 light years from Earth, the ...

Space has a knack for bending our sense of scale. The Moon feels close enough to touch—after all, we see its craters with ...

Theoretically, there is room for thousands. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The solar system contains eight planets: Mercury, ...

A: Venus, with a mean surface temperature of about 863 degrees Fahrenheit (462 degrees Celsius), is the hottest planet in our solar system, even though Mercury is closer to the Sun. This is because a ...

Before Johannes Kepler’s Third Law, the motions of the planets around the Sun were a mystery. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

The flighty planet Mercury, typically a tricky observing challenge from planet Earth, will be at its greatest distance from the sun in our sky Friday (Jan. 7). While Mercury will be shining quite ...