A new analysis reveals when Artemis II astronauts were truly farthest from other humans, including those on space stations.

Humans carry a surprising relic from deep evolutionary history, one that traces back to a tiny, one-eyed ancestor that lived nearly 600 million years ago. New findings on eye evolution highlight how this unusual feature played a key role in shaping modern biology.

Artemis II is underway, carrying four astronauts around the moon on a 10-day mission to test systems for later lunar flights and an eventual moon base.

Artemis II will reach a distance of more than a quarter million miles from Earth, looping thousands of miles beyond the far side of the Moon before Earth’s gravity pulls the Orion spacecraft back home for a scorching 25,000 mph (40,000 km/hr) reentry and splashdown in the Pacific Ocean.

Dragonflies and humans can see colors similarly, thanks to a common protein in the eye that resulted from parallel evolution.

Research suggests that crying is not a sign of weakness, but one of the most sophisticated social technologies in the natural world.

What would a chimpanzee do if you handed it a glittering quartz crystal? Apparently, the same thing many of us would—hold onto it, study it and refuse to let it go. A new study has found that chimpanzees are drawn to crystals in strikingly familiar ways,