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

This video explains how the number of planets in our solar system depends on how we define a “planet.” The International ...

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

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

We have no idea what kind of life may exist on other planets, so it’s hard to know what to look for. Proxima Kósmos imagines ...

Scientists reveal how waves behave on alien planets, from towering methane seas on Titan to nearly still lava oceans on ...

Having been stripped of its full planetary status in the solar system, Pluto, it is safe to say, doesn’t get much respect.

An accounting of all the water that should have been and gone on Mars’s surface has come up with a discrepancy that shows just how little we understand the Red Planet’s hydrological history A billion ...

TOI-201 is one of the few systems whose changes can be observed by humans in real time.

A giant planet circling a nearby star has given astronomers a rare look at what a colder, more Jupiter-like world can be like ...

16. Despite Mercury's extreme temperatures (like, up to 800 degrees Fahrenheit), it's believed to have ice at its north and ...

Nebraska scientist Aaron Lee M. Daigh proposes a broader, process-based definition of soil that includes deep subsurface ...