Re: [meteorite-list] Chicxulub was the small one

2011-04-25 Thread Spaceguard
"Chicxulub was the small impact. Another larger fragment of the comet hit at Shiva about 500,000 years later. That was the impact that finally killed off the dinosaurs." Theory, not fact. It's always useful to distinguish between the two, especially on a list with wide readership! Jay Tat

[meteorite-list] Chicxulub was the small one

2011-04-25 Thread E.P. Grondine
Hi Stewart, Sterling - Chicxulub was the small impact. Another larger fragment of the comet hit at Shiva about 500,000 years later. That was the impact that finally killed off the dinosaurs. Sterling, could you do a rough estimate of the energy of the Shiva Impact? Megatons would be fine, or s