Who believes an asteroid will collide with earth in the next 100 years?
A little history: “AP) Researchers studying rocks from Antarctica have found chemical evidence that a huge meteorite smashed the Earth 251 million years ago and caused the greatest extinction event in the planet’s history, killing about 90 percent of all life. The extinction, which scientists call the Permian-Triassic event, came some 185 million years before a similar meteorite collision with the planet killed off the dinosaurs. “It appears to us that the two largest mass extinctions in Earth history … were both caused by catastrophic collisions” with meteoroids” In 2004, NASA released the following statement: “2004 MN4 is now being tracked very carefully by many astronomers around the world, and we continue to update our risk analysis for this object.
