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Editors of EarthSky

International Space Station sends a laser message from space

On June 5, astronauts aboard ISS used a beam of laser light to send an HD video to researchers waiting below.

Scientists believe a hidden “ocean” lies deep within Earth

They believe there might be three times as much water deep underground as exists in all the world's surface oceans.

Vein scanning : Pay with your hand

New payment technique scans your palm's unique vein pattern

Human language’s deep origins directly from birds, primates?

The human language that we know today arose from a fusion of birdsong and the pragmatic, content-carrying parts of speech of other primates, say researchers

Chimps outwit humans in games of strategy

In contests drawn from game theory, chimpanzee pairs consistently outperform humans in games that test memory and strategic thinking.

Mercury passing in front of the sun, seen from Mars

Transit of planet Mercury across the sun on June 3, as seen from Mars by a camera on the Curiosity rover.

Solar maximum is back!

Solar Max has arrived, but this "Mini Max" is not like any other solar maximum of the Space Age.

Far side of the moon mystery solved

When spacecraft first transmitted the images of the moon's far side to Earth, we saw the lunar farside lacks the large dark areas called maria, or seas. Why?

Moon formed from Earth collision with planet-sized body: New evidence

The theory that the moon formed when a planet-sized body named Theia crashed into Earth is supported by new evidence using samples from Apollo missions.

Light from huge explosion 12 billion years ago reaches Earth

Intense light from an enormous star explosion more than 12 billion years ago — shortly after the Big Bang — recently reached Earth and was visible in the sky.