When will the next big one hit earth? This is a real threat unlike the Global Warming hoax or the Climate Change religion! A cynic might say the latter two were invented to distract humanity from such real cataclysmic events (impact event). Or what about SARS-Cov-2 (was it an accident? or an intentional release?, biological warfare experiment?, I blogged here about it)!
"A 340-metre-wide space rock named Apophis whizzed safely past Earth on 6 March. The next time it returns, in 2029, won’t be so uneventful: Apophis will come within 40,000 kilometres of the planet, skimming just above the region where some high-flying satellites orbit. ...
Since 1998, when NASA kicked off the biggest search for near-Earth asteroids, scientists have detected more than 25,000 of them. And 2020 turned out to be a record year for discoveries. ... astronomers catalogued 2,958 previously unknown near-Earth asteroids over the course of the year ...
A large number came from the Catalina Sky Survey, which uses three telescopes in Arizona to hunt for threatening space rocks. ..."
Since 1998, when NASA kicked off the biggest search for near-Earth asteroids, scientists have detected more than 25,000 of them. And 2020 turned out to be a record year for discoveries. ... astronomers catalogued 2,958 previously unknown near-Earth asteroids over the course of the year ...
A large number came from the Catalina Sky Survey, which uses three telescopes in Arizona to hunt for threatening space rocks. ..."
To the best of our incomplete knowledge:
"... Asteroids with a 1 km (0.62 mi) diameter strike Earth every 500,000 years on average.[16][17] Large collisions – with 5 km (3 mi) objects – happen approximately once every twenty million years.[18] The last known impact of an object of 10 km (6 mi) or more in diameter was at the Cretaceous–Paleogene extinction event 66 million years ago. ..." (Source)
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