Have you ever wondered how long it takes for each planet to orbit the Sun? From Mercury’s blazing 88-day year to Neptune’s astonishing 165-year journey, every planet moves at a completely different ...

Why do all planets in our solar system orbit the Sun the same way? This documentary unravels the cosmic forces, from the ...

Perihelion for 3I/ATLAS takes place on Oct. 30, when the interstellar interloper will be 1.35 astronomical units (125 million ...

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

Short-period comets get close to the sun much more often than their long-period kin, and every time they do, they deplete ...

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 ...

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

Mercury currently appears as a bright "evening star" in the southwestern sky at sunset. Mercury will reach its greatest ...

When you see art of our solar system as the planet orbit the sun, you may notice that Earth's orbit has a tilt. It is not a perfect circle. What's more, Earth is not the only planet that displays such ...

Harvard astronomer Avi Loeb has argued at length that 3I/ATLAS — the third-ever interstellar object ever detected, currently ...

No, NASA didn’t confirm a second moon, but scientists did discover something else that’s been traveling with Earth for ...