No asteroid before has had such a big chance of hitting the earth. B. Huge damage will be caused if Apophis really hits the earth. C. Time is against man preventing the disaster happening. D. Not enough observations on asteroids have been done. ...
It’s common for newly discovered asteroids to appear more threatening when first observed. “Because orbits stemming from very limited observation sets are more uncertain it is more likely that such orbits will ‘permit’ future impacts,” the Center for Near Earth Object Stud...
Future impact risk remains low, however, for two reasons: The evidence we have about the frequency of asteroids that hit Earth today and in the past, along with no proof of any known looming asteroid strikes. (Asteroid-sleuthing telescopes are trained on the skies each night.) Impressively, ...
The flash of a meteor is the result of one of those bits of dust or ice from the comet debris trail (aka a 'meteoroid') hitting the top of Earth's atmosphere. A primer on meteoroids, meteors and meteorites. Credits: Scott Suthe...