Picture of the Day: The Prometheus Plume of Io

ioprometheus_galileo_900.jpg


This image of Io, taken in 1997 by NASA's Galileo spacecraft in orbit around Jupiter, captures two sulfurous eruptions on the surface of the volcanic moon. At the image top, a bluish plume rises nearly 140 kilometers above the surface of a volcanic caldera known as Pillan Patera. In the image middle, the ring shaped Prometheus plume is seen rising about 75 kilometers above Io. Named for the Greek god who gave mortals fire, the Prometheus plume is visible in every image ever made of the region dating back to the Voyager flybys of 1979 - presenting the possibility that this plume has been continuously active for at least 18 years.

Image: NASA


Presented by

Jared Keller is a former associate editor for The Atlantic and The Atlantic Wire and has also written for Lapham's Quarterly's Deja Vu blog, National Journal's The Hotline, Boston's Weekly Dig, and Preservation magazine. 

What LBJ Really Said About Selma

"It's outrageous what's on TV. It looks like that man is in charge of the country."

Join the Discussion

After you comment, click Post. If you’re not already logged in you will be asked to log in or register with Disqus.

Please note that The Atlantic's account system is separate from our commenting system. To log in or register with The Atlantic, use the Sign In button at the top of every page.

blog comments powered by Disqus

Video

What LBJ Really Said About Selma

"It's going to go from bad to worse."

Video

Does This Child Need Marijuana?

Inside a family's fight to use marijuana oils to treat epilepsy

Video

A Miniature 1950s Utopia

A reclusive artist built this idealized suburb to grapple with his painful childhood memories.

Video

Why Principals Matter

Nadia Lopez didn't think anybody cared about her school. Then the Internet heard her story.

More in Technology

Just In