Cosmic collision happened in the past but science has no record of these collisions, maybe some small galaxy pass within our galaxy,merged and changed the intrinsic atmosphere of the earth causing massive devastation of living things on the land,air and sea.
2007-02-23 12:23:45 · 6 answers · asked by darkshadow_1971 1 in Science & Mathematics ➔ Other - Science
I really don't agree that science has no record of these collisions. They have found several large craters in the earth that were found with photography from the space shuttle. One very large one, that is miles across, is off the the northern end of South America. It is felt that this impact caused huge amounts of debris to go into the atmosphere that in turn caused the clouds to cover the sun and that earth may not have had any sun for a year of more. This is turn caused massive extinctions of animals, plants, etc. etc.
2007-02-23 12:45:41 · answer #1 · answered by ? 7 · 0⤊ 0⤋
It is certain that there have been cosmic collisions in the past where bodies of a significant size have hit the Earth. The effect of a sizable object would have been catastrophic. Whether this killed off the dinosaurs is still open to debate, but the collision which resulted in the formation of the moon would have transformed the surface of the Earth to molten rock and would definitely have wiped out any life that existed at that time.
2007-02-23 12:29:14 · answer #2 · answered by davidbgreensmith 4 · 0⤊ 0⤋
An Astroid probably hit the planet and changed the weather to the Ice Age that wiped the dinosaurs off.
2007-02-23 13:22:35 · answer #3 · answered by sunflare63 7 · 0⤊ 0⤋
No one can say for sure but it's generally thought that a large asteroid hit the earth. The force was such that it threw up huge amounts of dust into the atmosphere which blocked out sunlight for many years.
2007-02-23 12:28:46 · answer #4 · answered by Trevor 7 · 0⤊ 0⤋
No, not a galaxy. That would have upset the orbits of the stars, and we could still see that today.
The "record" is the tiny spheres of melted rock found in the Cretaceous-Tertiary, or KT, boundary around the globe. There is also lots of other evidence, but that is the primary one.
2007-02-23 12:33:08 · answer #5 · answered by morningfoxnorth 6 · 0⤊ 0⤋
it really can happen unnoticeably.science people may have been noticing it,but because some people disagree with them and their lack of proof, it usually is unknown to the public
2007-02-23 13:52:12 · answer #6 · answered by shygal 2 · 0⤊ 0⤋