Though they don't orbit around our sun, sub-Neptunes are the most common type of exoplanet, or planet outside our solar ...

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Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?

For years, astronomers have toyed with the idea that the Sun hides an extra planet so distant and dim that even the best ...

Earth-like exoplanets might be more common throughout the Milky Way than previously believed, astronomers report in a new ...

Astronomers claim to have discovered a new ninth planet in our solar system, according to research led by Terry Long Phan ...

A new study has found that such heavy metals may have formed through eruptions on a rare type of star called a magnetar.

Vesta might be a shattered remnant of an early planet, not a failed one—forcing scientists to rethink how worlds begin.

A 9th planet in our solar system might be found — and no, it’s not Pluto - Is there another planet out there? Researchers say ...

Researchers have found a candidate for the hypothetical Planet Nine, which could be an undiscovered giant planet way out in our solar system. However, as with all ninth planet research, the new ...

NASA scientists have sought to understand planet Jupiter, the gas giant whose mass is more than the rest of the planets in ...

"The key planet-formation processes in protoplanetary disks remain an active matter of research. One promising mechanism to ...