A powerful new observatory is the best hope yet for finding the elusive Planet 9, a large planet that some scientists say is ...

We've known for over 30 years that there are other stellar systems in our galaxy, but we don't have any idea how many there are.

A new model has been developed to simulate interstellar activity within our solar system and the nearby Alpha Centauri system ...

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 ... Mar. 13, 2025 — Water once existed ...

According to new simulations, many, even most, planets get ejected from their star early in their history Star Trek Space:1999 free-floating planets, As J.R.R. Tolkien wrote in The Fellowship of the ...

Pluto isn’t the only dwarf planet in our solar system's outer reaches. Now is an ideal time to look for the egg-shaped Haumea, says Abigail Beall ...

Carbon dioxide has been detected on a planet outside our solar system for the first time. The gas has been observed directly by the James Webb Space Telescope on four exoplanets, all belonging to ...

one which can offer superb views of the other bodies in the solar system. But which one to choose? We've got you covered with our guide to the best telescopes for seeing planets. There are several ...

Astronomers have discovered two new exoplanets that are similar to other worlds found in the Milky Way, but are unlike any in our own solar system. The two exoplanets, or planets outside of our ...

The findings suggest planets in a system 130 light-years away likely built up solid cores before attracting gas, much like our solar system’s gas worlds. Webb’s coronagraphs allow direct atmospheric ...

Four small rocky planets detected in orbit around Barnard's Star, the nearest single star system to our solar system, are seen in this illustration released on March 11, 2025. International Gemini ...