Enormous Asteroid Discovered Last Week Will Whizz Past Earth On Halloween

Space





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Asteroid 253 Mathilde, measuring about 50 kilometers (30 miles) across, by NASA via Wikimedia Commons.

Two asteroids will pass by Earth this Halloween. The first is 2009 FD, a peculiarly dark asteroid, which will make its closest approach on October 29. The second, 2015 TB145, will fly-by on Halloween. The two asteroids won't be visible to the naked eye, even at their closest approach. The astronomical events have been announced in NASA's Goldstone Radar Observation Plan.