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Some planets are just flipping backward.
Of the more than 500 planets detected around stars besides our Sun, the vast majority appear to spin the same way the star does, scientists reported on Wednesday in the journal Nature.
But some of these extrasolar planets spin in the opposite direction of the stars they orbit, astronomers found. These strange, backward-spinning planets are usually gassy giants called hot Jupiters, not rocky orbs like Earth.
Labels: Why some planets spin backward