NASA to lead global asteroid response
Agency’s monitoring role boosted to include warning and R&D on defence capability.
Eugenie Samuel Reich
asteroid impact.NASA is to be charged with helping to avert a hit from a space rock.JULIAN BAUM / SCIENCE PHOTO LIBRARY
NASA will play a leading part in protecting the United States and the world from the threat of a dangerous asteroid strike, according to letters sent by John Holdren, director of the White House Office of Science and Technology Policy (OSTP), to Congressional committee leaders on Friday.

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