A strange planetary system called TOI-201 is changing in real time, with three very different worlds pulling on each other.

A newly-discovered planet named Enaiposha, GJ 1214 b, is unlike anything found in our own solar system, similar to a ...

The strangest part of the TOI-201 system is not that it holds three very different worlds. It is that astronomers can ...

Astronomers have found new evidence that a mysterious ninth planet may be hiding at the edge of the solar system - rewriting what we know about the cosmos again. An international team from Taiwan, ...

Enter Wispit 2, a young star discovered in 2025 and sitting a cool 430 to 437 light-years from Earth (that’s far, even by SpaceX standards). By studying the disk around this cosmic newborn, ...

The LHS 1903 system defies expectations with a rocky outer planet, prompting new ideas about how planets form and evolve.

Add Yahoo as a preferred source to see more of our stories on Google. Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky ...

Astronomers announced they discovered the TOI-201 planetary system, which greatly expands our understanding of how solar ...

Rather than slowly condensing over millions of years, the first building blocks of Earth and other planets may have formed ...

All of our solar system’s planets are lining up in the night sky at once this week. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known as a great ...