Researchers have developed the Smaller Than Earth Habitability Model (STEHM) to assess which planets can maintain ...

If confirmed, the rock would become just the second world past Neptune in our solar system to host an atmosphere.

Worlds this small and distant are thought to be too cold and have too little surface gravity to hold onto gases. But the ...

That would have enabled more of this organic carbon—and carbonate accumulating in shallow water around Columbia—to be ...

The atmosphere is between 5 million and 10 million times thinner than Earth's atmosphere. A very small body, far from the sun in an icy outer realm of the solar system, has mysteriously grown an ...

Earth was mostly devoid of oxygen for much of its 4.5 billion year lifetime. That is, until certain processes started to ...

TOI-199 b, a rare temperate giant planet, sits between scorching hot Jupiters and frozen gas giants, and JWST has found ...

A new study finds pollution from satellite megaconstellations could account for 42% of the space sector’s climate impact by ...

Astronomers have confirmed, for the first time, a trans-Neptunian object with a thin atmosphere—something previously thought exclusive to Pluto among similar objects. Trans-Neptunian objects (TNOs) ...

Our atmosphere is about 78% nitrogen and 21% oxygen, with traces of other things like water and carbon dioxide. It's an odd mix compared to the atmospheres of other planets. Jupiter and Saturn are ...