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NASA plans asteroid rodeo to lasso 25ft space rock for research
NASA Asteroid Landing Mission To Take Place In 2021 After Accelerated Obama Plan Speeds up mission by 4 years
Doomsday Recalc Gives Humanity Greater Chance of Long-Term Survival Asteroid shield would improve odds further
Better Asteroid Detection Is Needed, Experts Say Huge potential for devastation exists. #AsteroidShield
Congress hears options for asteroid defense: Pay now or pray later Annual price to catalog threats is a small
New evidence suggests comet or asteroid impact was last straw for dinosaurs Most accurate date estimate yet
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