Your every breath serves as a reminder that the atmosphere of Earth is silently carrying out its function. Since air is ...

Earth, sun, moon: three objects in space whose interactions have a pretty big impact on our lives. Earth orbits the sun once a year, and it rotates on its axis about once a day (depending on your ...

The Earth often gets a few visitors in the solar system, but some stick around for a while. Here's what to know about the ...

It's largely agreed that the moon was created around 4.5 billion years ago when a protoplanet collided with early molten ...

How big it is: 865,000 miles (1.392 million kilometers) across How far away it is: 93 million miles (150 million km) What type of star it is: A yellow dwarf star The sun is the star at the center of ...

Quasi-moons are not real moons and don't actually orbit the Earth, although they sometimes appear to do so for short periods of time, Phil Nicholson, professor of astronomy at Cornell University, told ...