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Editors of EarthSky

Traffic around Mars gets busy

With five active spacecraft now orbiting the planet, NASA has beefed up its traffic monitoring to make sure the Mars orbiters don't get too close to each other.

Lunar Reconnaissance Orbiter drops nearer moon

Flight controllers at Goddard Space Flight Center completed a maneuver that lowered the spacecraft’s orbit to within 12 miles (20 km) of the moon's South Pole.

Scientists measure most distant galaxy yet

Galaxy EGS-zs8-1 sets a new distance record. It's so far away the light we receive left the galaxy over 13 billion years ago, and it is just arriving now.

Supernova missing link in gamma-ray burst mystery

Why do some supernovae produce gamma-ray bursts, while others don't? The answer may lie in the swirling disk - and powerful jets - that some supernovae leave behind.

Water abundant in first billion years after Big Bang?

Water vapor could have been just as abundant in pockets of space a billion years after the Big Bang as it is today, according to new research.

Huge magma reservoir discovered under Yellowstone supervolcano

It's below the magma chamber they knew about before and contains enough hot, partly molten rock to fill the Grand Canyon 11 times over.

Watch the Arctic ice pack vanish

Decades ago, most of Arctic's winter ice pack was made up of thick, perennial ice. Not anymore. Watch the change in this one-minute animation.

Experience 2 months of Rosetta’s comet

Spectacular images from Rosetta spacecraft of Comet 67P/Churyumov-Gerasimenko between January 31 and March 25. Many different angles. Increasing activity!

Tornado track in northern Illinois

Satellite view makes clear how unlucky the 150 people of the town of Fairdale were on April 9.

Life’s building blocks in infant star system

"From a life in the universe point of view, this is great news,” said a researcher.