Earth has only one true natural satellite, our 2,159-mile-wide moon which orbits about 239,000 miles away from our planet. However, experts only recently discovered a new quasi-moon; a small body that ...

A distant gas giant the size of 10 Jupiters is now the first planet outside Earth's solar system to be mapped in three ...

NASA just confirmed that a quasi-moon has been orbiting since 1960. Here is everything to know about what is being called a ...

The comet, called 3I/ATLAS, is the third known interstellar object that has come through our solar system. As it flies deeper ...

Contrary to online rumors, Earth still only has one true moon, but astronomers have discovered a so-called 'quasi-moon.' Here's what it is.

Scientists are observing an Earth-like exoplanet that may contain water using NASA's James Webb Space Telescope, the space agency said in a news release. The exoplanet, known as TRAPPIST-1 e, orbits ...

Temperatures on the planet could make water theoretically possible. Astronomers are researching an Earth-like exoplanet that could contain water, according to NASA. The exoplanet, named TRAPPIST-1 e, ...

NORFOLK, Va. — Each planet in our solar system takes a different amount of time to complete one orbit around the sun. For example, Mercury, being closest to the sun, takes just 88 Earth days to ...

When a Mars-sized meteorite slammed into Earth billions of years ago, the impact completely reset any and all chemical ...

Scientists have shown that Earth’s basic chemistry solidified within just three million years of the Solar System’s formation. Initially, the planet was barren and inhospitable, missing water and ...

In a secluded corner of the Lynx constellation, just 18 light-years from our planet, astronomers have found a stunning jewel—a planet around a tiny red dwarf star that may have the right conditions to ...