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RE: NEA that Threatens Life on Earth
Hi @alf41h good article but there are a couple of things I didn't quite follow:
On March 23, 1989, a kinetic-powered asteroid of more than 1000 hydrogen 1 megaton bombs
Do you mean an asteroid with the potential to generate 1000 Megaton of TNT equivalent energy on impact?
It also tracked the asteroid that in 2019 will collide with the Earth.
Which asteroid is this?
Drainage of sea water within 40 seconds can be as high as 35 km.
Are you saying a wave as high as 35km (35m?).