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  1. NASA’s Planetary Radar Tracks Two Large Asteroid Close …

  2. Watch: Asteroid 'Fireball' Seen After Only Ninth-Ever Pre-Impact ...

  3. NASA simulates how the U.S. might respond to asteroid

  4. Next Five Asteroid Approaches - NASA Jet Propulsion Laboratory …

  5. Asteroid Watch - NASA Jet Propulsion Laboratory (JPL)

  6. Two Massive Asteroids Will Fly Past Earth This Week. Here's What …

  7. Asteroid about to zoom oh-so-close to Earth, NASA says

  8. An asteroid is coming exceedingly close to Earth, but will miss

  9. Eyes on Asteroids - NASA/JPL - NASA's Eyes

  10. An asteroid had 'a very close encounter' with Earth tonight : NPR