In 2029, Apophis – believed to be one of the most hazardous to Earth when it was first discovered in 2004 – will come within 32,000 kilometers (20,000 miles) of the Earth's surface. The asteroid should be visible from the Eastern Hemisphere without the aid of a telescope or binoculars. NASA already has one visit planned, dubbed OSIRIS APEX. This maneuver will allow scientists on Earth to observe these changes.
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