China is positioning itself to take the lead in one of the most coveted goals in planetary science—returning samples from ...

Imagine you're an alien living in the Andromeda galaxy, 2.5 million light-years away, peering back at Earth through a massive ...

In the early 1990s, eight people tried to survive in a hermetically sealed glass structure filled with miniature forests, ...

Data from oceans, ice and the air all point to the same thing: rising invisible heat. What experiments are working, and what kinds of trials do we need to stop?

NASA has discovered an interstellar comet that's wandered into our backyard. The space agency spotted the object with the ...

A NASA astronaut captured a fascinating weather phenomenon that still has scientists scratching their heads. Nichole Ayers is ...