Stars that pass close to the solar system could pull planets out of alignment, sending them hurtling into the sun or out into space ...

Researchers say they found a curious dot on infrared images taken 23 years apart that seems to be moving in a manner ...

This week, an old astronomical controversy is renewed as researchers present new evidence for a hidden "Planet X" in our ...

To understand how chaotic the early solar system was, we need only gaze at the moon. Its cratered surface bears the scars of ...

Over the past decade or so, astronomers have speculated about the characteristics of rogue planets in the Milky Way galaxy.

One set of dots had matching colors and brightness. open image in gallery Is there a possible ninth planet in our solar system? Researchers say they may have found a candidate (Credit: ESO/Tom ...

Mar. 17, 2025 — A combination of cosmic processes shapes the formation of one of the most common types of planets outside of our solar system, according to a new ... Webb Telescope Captures Its ...

Stars don’t just form planets—they may also re-supply their disks with gas, reshaping how and where planets emerge.

Mars is the fourth planet from the Sun in the Solar System . The average orbital distance of Mars from the Sun is about 230 ...

A ninth planet the size of Neptune may be hidden in the far reaches of the solar system, but the evidence has left some experts skeptical.