Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

Thanks to JWST, we've learned key details about methanol — a key building block for organic compounds necessary for life — on ...

Imagine the catastrophic gravitational effects and potential solar system disruption if the largest known black hole entered ...

Discovered in 1930, Pluto was long considered our Solar System's ninth planet, but was unseated in 2006 after the discovery ...

Researchers say they found a curious dot on infrared images taken 23 years apart that seems to be moving in a manner consistent with a large, distant planet.

Astronomers may have found a candidate for Planet Nine. This planet is beyond Neptune. The finding could be the first ...

Researchers discovered Eos, a molecular cloud, using ultraviolet light. It is near Earth and lacks carbon monoxide. This ...

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

At the time, the Earth would have been far closer to the moon than it is today, making it perhaps twice as large in the lunar ...

The idea that our Solar System is representative of other solar systems hasn't survived the age of exoplanet discovery.

For years, astronomers have been searching for a ninth planet in our solar system (after giving Pluto the old heave-ho and demoting it to a dwarf planet) and now researchers say they’ve found a ...

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