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Editors of EarthSky

NASA’s Dawn spacecraft nears asteroid Vesta

NASA's Dawn spacecraft will arrive at the main-belt asteroid Vesta tomorrow (July 15). Space scientists say the spacecraft is performing normally at this time.

A peek at dinosaurs before mass extinction

A team of scientists has discovered the youngest dinosaur preserved in the fossil record before the catastrophic meteor impact 65 million years ago.

Galaxy collisions not the only source of monster black hole activity

What causes a monster black hole at a galaxy's heart to turn on and begin radiating powerfully? European astronomers suggest a reason besides galaxy collisions.

Rare snow in the Atacama desert, Chile

Satellite imagery captures a rare snowfall in the Atacama Desert of Chile, one of the driest places on Earth. See an image of the rare snow here.

Gadgets cause 25% of all U.S. car accidents, report says

A report - using 10 years of science data - suggests that 25% of all U.S. car accidents occur while the driver is using gadgets, such as a cell phone.

Can the ocean buffer climate change?

Climate change is negatively affecting the ocean's ability to absorb carbon emissions, say ocean researchers.

Heart disease and stroke tied to national income

Developing countries tend to suffer more death and disability by stroke than heart disease, as opposed to countries with higher incomes, says study.

What do hummingbirds eat? Find out!

It's fun to watch hummingbirds gather around your backyard feeder. But are you really helping out those hummingbirds by giving them sugar water?

Phoenix dust storm videos from the road

What's it like to drive into a dust storm that covers some 100 miles in horizontal distance? Watch these videos from the July 5, 2011 Phoenix haboob.

Scientists drag light by slowing it to the speed of sound

Researchers drag a green laser light by slowing it down in a ruby crystal and then spinning it at 3,000 rpm. Read more about the ability to drag light.