Jupiter moon volcanic eruption: NASA video shows huge explosion on Io’s surface.

Video: A Massive Volcanic Eruption on Jupiter Moon’s Io

Slate in motion.
March 7 2014 10:30 AM

Io’s Fire, Caught on Camera

Jupiter's third-largest moon is the most volcanically active object in the solar system.

NASA's New Horizons spacecraft took amazing images of an eruption on Io in 2007 when it traveled past Jupiter, and NASA just released them now. ​ Io's volcanoes can produce plumes that climb as high as 300 miles above the moon's surface.

  Slate Plus
Lexicon Valley
March 31 2015 9:17 AM The Redline of March Overheard on email: Slates copy desk rounds up the month’s style and grammar rulings.