Mysterious Russian satellite breaks up in orbit | ULA assembles 1st Vulcan Centaur rocket for debut launch | Space quiz! Astronomers have caught another look at massive comet 96P Machholz as it nears its closest point to the sun, or perihelion. In what year was the comet's previous perihelion?
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Space quiz! Astronomers have caught another look at massive comet 96P Machholz as it nears its closest point to the sun, or perihelion. In what year was the comet's previous perihelion?
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