NASA has reported a significant meteor explosion in Earth's atmosphere several months ago -- and we didn't see it coming.
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NASA seeks help to save Earth from killer asteroids – The Mercury News
Apophis
Space Exploration - Page 5
NASA's DART: A giant leap for mankind to protect Earth - Big Think
NASA asteroid sample parachutes safely onto Utah desert
International Asteroid Day: Are we ready if an asteroid strikes Earth?
Astronomers Spot Rare Disintegrating Asteroid
NASA Reports Undetected Asteroid Explosion in Upper Atmosphere
110-Feet-Wide 'City-Killer' Asteroid to Zoom Past Earth on Aug 14; 5 Back-to-Back Space Rock Fly-bys Expected In 5 Days
How hot can an asteroid get when entering Earth's atmosphere? How hot is the explosion upon impact? - Quora
Government UFO Report Won't Rule Out Visitors from Space, BU Today
ExtremeTech
Could We Stop an Asteroid?
Hardest part of deflecting killer asteroid? The politics
A giant space rock demolished an ancient Middle Eastern city and everyone in it – possibly inspiring the Biblical story of Sodom - USC News & Events