Io Eclipse Shadow on Jupiter from Juno
The story
What's that dark spot on Jupiter? It's the shadow of Jupiter's most volcanic moon Io. Since Jupiter shines predominantly by reflected sunlight, anything that blocks that light leaves a shadow. If you could somehow be in that shadow, you would see a total eclipse of the Sun by Io. Io's shadow is about 3600 kilometers across, roughly the same size as Io itself -- and only slightly larger than Earth's Moon. The featured image was taken last month by NASA's robotic Juno spacecr
Highlights
More from the cosmos
Frequently asked
What is this image of?
What's that dark spot on Jupiter? It's the shadow of Jupiter's most volcanic moon Io. Since Jupiter shines predominantly by reflected sunlight, anything that blocks that light leaves a shadow. If you could somehow be in that shadow, you wo…
Who captured it?
This image is credited to NASA, featured via NASA's Astronomy Picture of the Day.
When was it published?
NASA featured this image on 2019-10-07.
Can I use this image?
NASA imagery is generally free to use for education; check the official APOD page for specific credit and licensing.
See it in full resolution
Open NASA's Astronomy Picture of the Day for the high-resolution image, full explanation and credits.
View on NASA APODOpens the official source in a new tab.
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