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Editors of EarthSky
Oldest stone tools found in Kenya
The tools, whose makers may or may not have been some sort of human ancestor, date back to 3.3 million years ago.
May 20, 2015
Do nano-sunscreens harm sea life?
Nano particles in sunscreens have been found to harm marine worms, crustaceans, algae, fish and mussels. A new study shows their negative effect on sea urchin embryos, too.
May 18, 2015
Watch off-kilter explosion of supergiant star
This one-minute animation shows the shock wave that is created when the core of a massive star collapses.
May 15, 2015
The mystery of India’s rapid drift
India got a geologic boost that accelerated its drift toward Eurasia 80 million years ago, researchers suggest. The speed of the resulting impact created the Himalayas.
May 14, 2015
Space data protect whales from ships
A new tool tracks the locations of whales along the U.S. west coast, in order to decrease the chances of whales colliding with ships or getting tangled in fishing gear.
May 12, 2015
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.
May 6, 2015
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.
May 5, 2015
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.
May 5, 2015
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.
May 2, 2015
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.
May 1, 2015
