Astronomers recently detected a stray quasi-moon in our planet’s orbit, but it's hardly the first stowaway to hang out around Earth. Unlike the Earth's moon, quasi-moons are not gravitationally bound ...

Scientists believe the best chances for finding life are not on planets, but on the moons orbiting them. Hunter found alive after going missing for nearly 3 weeks What taking melatonin could reveal ...

Venture into the extreme outer reaches of the solar system to explore the most distant and enigmatic bodies ever discovered. Meet Sedna, Gong Gong, and Eris as we investigate their strange orbits, ...

NEW YORK (AP) — The moon will look slightly bigger and brighter Wednesday night during the closest supermoon of the year. The moon’s orbit around the Earth isn’t a perfect circle, so it gets nearer ...