Astronomy Picture of the Day ·

Dark Craters on Ganymede

The Astronomy Picture of the Day for July 22, 1998 is “Dark Craters on Ganymede,” an image. It is credited to Credit: Galileo Project, JPL, NASA. The original explanation runs about 119 words.

Dark Craters on Ganymede
Credit: Galileo Project, JPL, NASA Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“Ganymede has craters within craters within craters . The old surface of the largest moon in the Solar System shows its age by the large amount of these impact features.”

— APOD editors, July 22, 1998

Read the full explanation on science.nasa.gov

At a glance

Date
July 22, 1998
Type
Image
Credit
Credit: Galileo Project, JPL, NASA
Copyright
No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length
About 119 words

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On this day: July 22 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.