A recent study by Princeton University astronomers suggests the possible existence of a previously undetected planet in our ...

The solar system is composed of the sun, eight major planets, five dwarf planets, over a hundred moons, and countless comets ...

A newly discovered warp in the outer Solar System may have been created by a small, rocky world, much closer to the Sun than ...

KINGSPORT, Tenn. (WJHL) —This week, the night sky will provide the opportunity to view up to seven planets in our solar system. Mercury, Venus, Mars, Jupiter and Saturn will be visible to the naked ...

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

Astronomers have discovered fresh evidence suggesting the possible existence of an unseen planet in the far reaches of our solar system.

LYNCHBURG, Va. (WSET) — If you're trying to get a beautiful look at the planets in our solar system, you're in luck. Between February 25 and February 28, all seven planets in our solar system will be ...

Astronomers have found new evidence, revealing the existence of an unseen and mysterious planet that could be hidden in the solar system. The new research study which is published in the ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and Earth. The authors dubbed it Planet Y.