Latest stories
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Sunsets on Mars Turn Blue Near the Sun
Mars is red, but its sunsets can glow blue near the Sun. NASA rover images show how fine dust creates the counterintuitive color pattern.
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Some Moonquakes Can Keep Shaking for Hours
Apollo seismometers revealed four kinds of lunar shaking. Some moonquakes can last for hours, and NASA is preparing new instruments to listen again.
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The First Computer “Bug” Was a Real Moth—but the Word Was Already Old
A moth really did jam a Harvard computer relay in 1947. The famous logbook survived—but “bug” had described machine faults for decades.
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This Lizard Breathes From a Bubble on Its Nose
A Costa Rican water anole rebreathes an air bubble over its nose. An experiment found normal bubble use extended average dive time by about 32%.
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Crows Can Count Their Own Calls—Up to Four
Three carrion crows learned to produce one to four calls after visual or sound cues. Their first caw revealed that they had planned the sequence.
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The Deep-Sea “Golden Orb” Was Part of a Giant Anemone
Found on a rock more than 3,000 meters down, NOAA’s puzzling golden orb took years of microscopy and DNA work to identify as remains from a…
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Mercury Has Water Ice in Craters That Never See the Sun
Mercury is closest to the Sun, but permanently shadowed craters near its poles are cold enough to preserve water ice. NASA’s MESSENGER mission helped reveal why.
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The Ocean Has Lakes of Its Own. Some Are Deadly to Fish.
Dense brine can collect in deep-sea depressions and form eerie underwater lakes. Some are dangerous to fish, while microbes thrive along the boundary.
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A Bacterium So Big You Can See It Without a Microscope
A single bacterium in Caribbean mangroves can grow to about a centimeter long, and some reach even farther. Scientists found its cell structure just as surprising.
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Earth’s Largest Waterfall Is Hidden Beneath the Ocean Near Greenland
The world’s largest waterfall is hidden beneath the sea between Greenland and Iceland. The Denmark Strait cataract is driven by cold, dense water spilling downslope.