Imagine for a moment that Earth suddenly shrank to the size of the Moon, while the Moon expanded to the size of Earth. How would life on our planet change? Could humans survive this dramatic cosmic ...

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 ...

The universe has quasi-moons, mini-moons, and moonlets, but no official definition of what counts as a moon.

Christopher Palma does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Total solar eclipses are rare because of the Moon's size and distance from Earth. Only locations within the path of totality see a complete eclipse. The Moon's tilted orbit prevents eclipses from ...

Over 4.6 billion years ago, Earth took shape from a spinning cloud of dust and gas surrounding the young sun. Tiny particles within this cloud collided and clumped together, driven by gravity and ...

When Earth is opposite Mars from the sun, it will appear full because you’re looking directly on the daylit side. But ...

The Planet Earth and Moon in Orbit 42179 set measures 9" high, 12.5" long, and 7" wide. It's comprised of 526 pieces and is marketed for ages 10 and older. Technically speaking, this is a relatively ...