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NASA’s Planetary Radar Tracks Two Large Asteroid Close …
NASA Analysis: Earth Is Safe From Asteroid Apophis for 100-Plus …
Eyes on Asteroids - NASA/JPL - NASA's Eyes
NASA simulates how the U.S. might respond to asteroid threatening Earth ...
Next Five Asteroid Approaches - NASA Jet Propulsion Laboratory …
NASA Analysis: Earth Is Safe From Asteroid Apophis for 100-Plus …
Asteroid Watch - NASA Jet Propulsion Laboratory (JPL)
Apophis - NASA Science
Tiny Asteroid Buzzes by Earth – the Closest Flyby on Record - NASA
What We Learned From NASA’s DART Mission - The New York Times