The number of billionaires worldwide – and their combined wealth – reached record highs this year, buoyed in particular by ...

Imagine never being able to dream of landing on Mars or traveling to Saturn. Not because it's impossible to get there, but ...

Earth may have a moon today because a nearby neighbor once crashed into us, a new analysis of Apollo samples and terrestrial ...

Of the seven Earth-sized worlds orbiting the red dwarf star TRAPPIST-1, one planet in particular has attracted the attention ...

Searching for technosignatures—signs of technology on a planet that we can see from afar—remains a difficult task. There are ...

A new study reveals how specialized microbes might convert Martian regolith into durable, life-supporting structures. Since ...

Fresh evidence suggests early Earth wasn’t locked under a rigid stagnant lid but was already experiencing intense subduction.

If you’ve seen any of the “Ice Age” animated Disney movies, we have some bad news: You don’t know the real ice age.

Africa is on a fierce campaign that, if successful, will see the Mercator map replaced with the Equal Earth map on web-based ...

A newly identified tectonic "regime" may rewrite our understanding of how rocky worlds evolve, scientists report in a new ...

Later in December, the 3I/ATLAS interstellar comet will get as close to Earth as it ever will. Here's what to know.