A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth than the hypothetical Planet X, which astronomers have been hunting for ...

Astronomers are abuzz with the discovery of a rogue planet, 2MASS J05325346+0919037, which is set to pass within 0.05 ...

Jupiter's rapid early growth dramatically reshaped our solar system, scientists now reveal. Its immense gravity acted as a ...

What's special about Chiron's rings is that they're still forming; this marks the first time astronomers have ever seen a ...

The James Webb Telescope captures the beginning of planetary formation around the young star HOPS-315 for the first time.

Tests on olivine hint that water-rich exoplanets could generate H2O internally, possibly explaining ocean worlds and even some of Earth’s early water.

The early growth of the gas giant carved rings that formed primitive meteorites and shaped the architecture of the inner solar system. New research from Rice University reveals that Jupiter played a ...

The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...

ESO's Very Large Telescope has observed a rogue planet and revealed that it is eating up gas and dust from its surroundings ...

The rate of finding these distant worlds has recently increased, with astronomers scrambling to accommodate the data ...