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Incoming? This Week in Space looks at the sinister stealthy near earth asteroids that the WISE mission is finding that are lurking dangerously near Earth and only visible in the infrared. Workers at the Kennedy Space Center race to troubleshoot a valve problem with Discovery in hopes of keeping her on track for launch. A string of comets take a death dive, Jupiter’s Great Red Spot gets the thermal imaging treatment, fun with crash test dummies and more with Miles O’Brien and the TWIS team.