Have you ever looked up at the night sky and imagined yourself zooming past stars as if you were an astronaut? If so, you’re definitely not alone. No matter how old you are, outer space is a place ...

How far it is from the sun: 886 million miles (1.4 billion kilometers), on average How big it is: 72,400 miles (116,500 km) across, or almost 10 times the size of Earth. How many moons it has: At ...

Ah, Earth. We may not think about our planet on a day-to-day basis, but the world we live in is a pretty interesting place. The third rock from the Sun—and to this day, the only one with known ...

Today, April 22, is Earth Day, a time to appreciate our planet and the two-way relationship we have with it. It’s easy to take Earth for granted, since we see it every day. It becomes—it is—part of ...

Today is Earth Day, a worldwide celebration of our home planet. I know you’ll be hearing a lot of talk about the environment today, humanity’s global impact, and more … which is great, and I wholly ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Dwarf planets are worlds that are too small to be considered full-fledged planets, but too large ...