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. 

The Best 71-Second Animation You'll Watch Today

A rock monster tries to save a village from destruction.

Join the Discussion

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

blog comments powered by Disqus

Video

The Best 71-Second Animation You'll Watch Today

A rock monster tries to save a village from destruction.

Video

The Case for Napping at Work

Most Americans don't get enough sleep. More and more employers are trying to help address that.

Video

A Four-Dimensional Tour of Boston

In this groundbreaking video, time moves at multiple speeds within a single frame.

Video

Who Made Pop Music So Repetitive? You Did.

If pop music is too homogenous, that's because listeners want it that way.

Video

Stunning GoPro Footage of a Wildfire

In the field with America’s elite Native American firefighting crew

More in Technology

Just In