Astronomy Picture of the Day ·

Lava Fountain on Jupiter's Io

The Astronomy Picture of the Day for December 20, 1999 is “Lava Fountain on Jupiter's Io,” an image. It is credited to Credit: Galileo Project, SSI, University of Arizona, JPL, NASA. The original explanation runs about 88 words.

Lava Fountain on Jupiter's Io
Credit: Galileo Project, SSI, University of Arizona, JPL, NASA Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“A lava fountain shooting over a kilometer high has been discovered on Jupiter ‘s moon Io . The robot Galileo spacecraft orbiting Jupiter photographed the volcanic eruption during its close flyby of the moon late last month .”

— APOD editors, December 20, 1999

Read the full explanation on science.nasa.gov

At a glance

Date
December 20, 1999
Type
Image
Credit
Credit: Galileo Project, SSI, University of Arizona, JPL, NASA
Copyright
No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length
About 88 words

All of December 1999 → · 1999 by month → · Full archive since 1995 →

Topics in this entry

Jupiter

Topics are matched from words in the title and explanation.

On this day: December 20 in other years

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Source

Copy taken Oct 28, 2026, 2:39 AM EDT. The image and explanation belong to their creators. OpenOrbit is not affiliated with or endorsed by NASA.