Enjoying EarthSky? Subscribe.

121,037 subscribers and counting ...


Sneak preview: Colorful lunar eclipse on October 7-8

Before sunrise on October 8, the bright full moon over North America will turn a lovely shade of red. It’s a total lunar eclipse that’s visible from all parts of the U.S.

Everything you need to know about the October 7-8 total lunar eclipse

Time-lapse video of Meadow Fire in Yosemite

The Meadow fire in Yosemite National Park is still burning, but nearly 100 percent contained now. This video by QT Luong shows the beauty and terror of wildfire.

Video: Jellyfish flame on the ISS

Fire in space doesn’t act like fire here on Earth. Untethered by gravity, flames in space curl themselves into tiny balls. Here’s a new NASA video on experiments on combustion in microgravity aboard the International Space Station.

What’s the source of a mysterious ozone-depleting chemical?

The Montreal Protocol put the brakes on ozone-depleting chemicals 30 years ago. But one compound is still abundant in Earth’s atmosphere. Where’s it coming from?

Researchers discover remains of colossal 65-ton dinosaur

Researchers have uncovered a 77-million year old, plant eating, super-massive Titanosaur. The huge animal weighed as much as a herd of elephants.

Astronomers define boundaries of our home supercluster and name it Laniakea

The immense supercluster of galaxies containing our own Milky Way is 500 million light-years in diameter and contains the mass of a hundred million billion suns.

Video: Your brain on coffee

We love coffee! Coffee is the second most-traded commodity on Earth, after oil. How does the world’s favorite drug actually work? New video from AsapSCIENCE.

What if you could see the sound of a nightingale?

Andy Thomas of Australia is a multimedia artist, who makes 3D animations of bird songs. He calls them “audio life forms.”

At Iceland volcano, a white plume rises from the lava fountains

White plume from the active fissure at Holuhraun in Iceland.

White plume from the active fissure at Holuhraun in Iceland.

UPDATE SEPTEMBER 2, 2014. A white plume, with a blue tint below, rose from the active fissure at Holuhraun in Iceland, which stretches to the northeast from Iceland’s Bárðarbunga volcano. The Holuhraun fissure fields have been erupting with high lava fountains since Sunday morning (August 31), with no apparent release of ash. Yesterday’s observed plume was the first such plume to be seen. It drifted east-northeast with a maximum height yesterday of 15,000 feet from the eruptive site. The plume formed a cloud with very sharp edges at the top and below, said the Icelandic Met Office (IMO), which added:

It didn‘t seem that any ash came from the cloud. The white color of the plume does not suggest any ash.

Death Valley sliding stone mystery solved

The video above shows a famous sliding stone of Death Valley’s Racetrack Playa in motion. See it? It’s the big rock in the foreground. Watching this video, you become one of the first people on Earth to see a sliding stone in motion. Although their tracks across Racetrack Playa – a dry lake bed in Death Valley – have been observed and studied since the early 1900s, no one had ever seen the stones in motion … until now. What’s more, the researchers who captured this video say they now know what causes the stones to move.