View Full Version : Finally confirmed(or evidence strongly suggests): An asteroid wiped out the dinosaurs



Dustin
02-09-2013, 12:12 AM
Finally confirmed: An asteroid wiped out the dinosaurs | ExtremeTech (http://www.extremetech.com/extreme/147978-finally-confirmed-an-asteroid-wiped-out-the-dinosaurs)


European and American scientists have re-tested debris from Chicxulub using state-of-the-art equipment and narrowed the asteroid impact down to a period of 11,000 years, between 66.03 and 66.04 million years ago — almost simultaneous with the Cretaceous-Paleogene extinction. When dealing with geological timescales, a range of 11,000 years is about as accurate as you can get. As the research paper puts it, though, “the Chicxulub impact likely triggered a state shift of ecosystems already under near-critical stress.” In other words, prior to the extinction event, Earth was already teetering on the edge of self-annihilation. The asteroid was simply the zettajoule stick that broke T-Rex’s back.

PennyQuilts
02-09-2013, 08:11 AM
As the research paper puts it, though, “the Chicxulub impact likely triggered a state shift of ecosystems already under near-critical stress.” In other words, prior to the extinction event, Earth was already teetering on the edge of self-annihilation.

Earth will be fine. It just changes from time to time and the species on it have a hard time keeping up. Asteroids don't help. :)

kevinpate
02-09-2013, 08:58 AM
... Asteroids don't help. :)

Nicely understated :)

venture
02-09-2013, 01:39 PM
Earth will be fine. It just changes from time to time and the species on it have a hard time keeping up. Asteroids don't help. :)

Earth will be okay, well for at most of 4 billion years until it is destroyed.