You won't be able to see this again until 2032.
Late last month, NASA's Hubble Space Telescope captured a rare image of Jupiter with a few special guests: three of the gaseous planet's largest moons.
In the picture, Europe, Callisto and Io can be seen orbiting Jupiter and casting circular shadows on the planet's surface.
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CNN reports that this and won't repeat for nearly two decades.
Here's the footage in motion:
Not pictured above are the 59 other moons that orbit Jupiter. While many of those bodies cross over the surface simultaneously, they're typically too small to be captured by Hubble's camera. Io, Europa, Calliso and Ganymede (which wasn't pictured above) are the largest, most visible Jovian moons.
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April 24 marks the 25th anniversary of the Hubble Telescope. To celebrate, NASA and the European Space Agency, which jointly run the telecope, released this image of the star cluster Westerlund 2. (NASA/ESA/Hubble Heritage Team/A. Nota/Westerlund 2 Science Team)