In preparation for Juno’s approach on Jupiter in 2016, NASA’s InfraRed Telescope Facility (IRTF) took infrared images of Jupiter on May 16, 2015. Doing this now will give context for what Juno’s instruments will get when it gets up close and personal to the gas giant.
While we usually imagine Jupiter as being dominated by the Big Red Spot, in infrared the whole image is various shades of red. The spot is only visible by the bump it creates in an otherwise bright straight line. Try to track it in this gif NASA made from four images the IRTF took:
Image credit: NASA/JPL-Caltech
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