Longtime NASA astronaut Don Pettit is set to return from his fourth trip to space on Saturday night. Here are some of his ...

A 2014 satellite image captured a rare glimpse of a massive, eerily circular ring of clouds that formed slap-bang in the ...

Reflecting sunlight away from the Earth may mask the damage caused by global warming, but it won’t address the causes.

here are 9 unmistakable signs that prove climate change is real and happening now. It’s no secret—our planet is getting warmer. Since the late 1800s, Earth’s average surface temperature has ...

An incredible image shows the spring equinox from space. On Friday, at 9:01 a.m. UK time, the Sun appeared directly above Earth ... climate and the environment, captured the picture with Meteosat ...

Imminent loss of NASA's Aura and Canada's SCISAT will severely diminish scientists’ ability to monitor ozone-depleting substances in the stratosphere.

From an earlier photo of day, see another of Don Pettit's stunning Earth images and read about the "overview effect" experienced by astronauts after viewing our home planet from space.

A record low for Arctic winter sea ice has led to a record low for our planet's sea ice content as a whole. New research from NASA and the National Snow and Ice Data Center (NSIDC) in Colorado ...