Asharq Al Awsat The Artemis 2 astronauts have passed the halfway point between Earth and the Moon on Saturday as they sped toward a planned lunar flyby, with NASA releasing initial images of Earth ...

Microscopic ocean algae produce a huge share of Earth’s oxygen—but they need iron to do it. New field research shows that when iron is scarce, phytoplankton waste energy and photosynthesis falters.

A leak on a remote outpost orbiting about 250 miles above Earth may sound alarming, but not to worry: The seven astronauts aboard the International Space Station are not in harm's way. But until the ...