Jupiter’s Little Red Spot has become as strong as its big brother. The highest wind speeds in the smaller, more recent storm have reached 640 kilometers per hour, the same as those of the planet’s long-observed Great Red Spot. Amy Simon-Miller of NASA’s Goddard Space Flight Center in Greenbelt, Md., and her colleagues base their assessment on measurements that they took last April with the Hubble Space Telescope (SN: 5/13/06, p.
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