NASA astronaut Nichole Ayers captured an electrifying image of a giant lightning "sprite" shooting up over Mexico and ...

I’ve spent much of my long life studying — and trying to understand — the history of the universe. Along the way, I have been constantly reminded that science is essentially international: Science ...

Two studies fill in gaps about the cosmos’s ordinary matter. One maps it all, even the “missing matter.” The other details one of its hiding spots.

For decades, scientists have believed there should be black holes that fall between two well-known types. On one end are ...

The European Space Agency’s satellite will measure trunks, branches and stems in forests to shed light on how much carbon is ...

Today, at the Living Planet Symposium, ESA revealed the first stunning images from its Biomass satellite mission—marking a ...

A new study does the difficult task of trying to piece together the history of the world’s largest subduction zone.