Calculating Size of Asteroid to Wipe Out Life on Earth

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An asteroid would need to be approximately 3-10 kilometers in diameter to potentially wipe out all life on Earth, with the impact's energy being a critical factor in determining its effects. The calculations for such an impact involve assessing the mass and velocity of the asteroid, as well as its composition, impact location, and rotation speed. While a 25 km radius impactor could cause catastrophic damage, including igniting fires and flattening structures, it would not necessarily eliminate all life. An impact capable of eradicating even bacteria would require extreme conditions, such as melting the Earth's crust. Overall, the discussion highlights the complexities of asteroid impacts and their potential consequences for Earth.
  • #31
Oh well, I guess your right; it was a whimsical thought at best I suppose. You guys have pointed out a couple things that may be prohibitive, although I dispute a couple of points as well, but a chain is only as strong as it's weakest link, and this idea, obviously has a couple very weak links. Thanks for your input. Thats what I came to you for. Hey - - - - Mabey a good movie; that's the ticket.
Thanks again.
L8R
 

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