2006-11-19 07:43:24 · 13 answers · asked by mapleafgal sweet an delicious 1 in Science & Mathematics ➔ Astronomy & Space
Because of the ozone layers ability to vaporize the debris and meteors that come into contact w/ Earth. Also, Superman directs the larger ones back out to space.
2006-11-19 07:46:26 · answer #1 · answered by Justcurious 3 · 1⤊ 3⤋
because of the fact the moon is bare - you will locate the craters. Earth even if, has been manipulated and has replaced. There are craters everywhere - however the Earth is plenty extra alive that the craters have disapeared below great cities, organic failures, and different varieties of events! extremely, did you be attentive to that Earth probably have been given its moon while a rock bigger than Mars hit the Earth and the Moon substitute into certainly only a bite of Earth.
2016-11-25 19:59:20 · answer #2 · answered by mill 4 · 0⤊ 0⤋
While the earth is not "riddled" with craters, some impact craters do exist on its surface. Notable is the Barringer Meteor Crater in Arizona. One reason it still exists is because of the arid climate which has existed since the meteor struck. This should give you an idea; in fact, the earth"s surface shows little of the effects of bombardment from space because 1.) It has an atmosphere that is relatively much thicker than the other bodies you name. 2.) It has water present in large quantities in all three phases: solid, liquid, and gas. These two circumstances mean that the earth experiences weather, and the weathering effects of wind, water, and temperature variation work to obliterate these evidences. Also, and not insignificantly, earth's biosphere works to wear away these traces of interplanetary bombardment.
2006-11-19 09:13:23 · answer #3 · answered by JIMBO 4 · 0⤊ 1⤋
I think this is a good question! It can be hard to try and imagine how long a time period is involved. While the moon collected all it's craters, the Earth has gone through many changes. Whole mountain ranges have developed. More and more craters are being discovered as we study the Earth with satellite photos.
2006-11-19 08:12:59 · answer #4 · answered by Alan J 3 · 2⤊ 1⤋
because we have atmospheric weathering, where as the moon, mercury and mars do not. We have wind and rain and earthquakes to cover up any old marks, but places like the moon don't. Those footprints will be there for eternity unless something else comes and messes it up, like another meteor or something. We also have an ozone layer that will prevent any more kinds of meteors to damage or create a new mark in the earth, where those three do not.
2006-11-19 07:53:15 · answer #5 · answered by Anonymous · 1⤊ 0⤋
It is riddled with impact marks all over its surface however unlike the moon we have an atmosphere and oceans that constantly cover most of them up, or wash them away completely. from orbit the international space station finds new evidence of more and more impacts that have never been noticed before, Its just lucky for us that we have Jupiter catching a lot of the big stuff and our atmosphere gets a lot of the rest of it but every so often our sun bounces through the toughest part of its orbit and things get really nasty every 3 thousand years or so.
2006-11-25 16:27:08 · answer #6 · answered by eqruluan 1 · 0⤊ 0⤋
The earth's surface is riddled with craters. But you can't see them because there's much grass over them.
2006-11-19 08:17:48 · answer #7 · answered by wolf 6 · 0⤊ 2⤋
It is. But the atmosphere now precludes all but the largest objects from hitting the earth. As for earlier times, their craters have been obscured by erosion--millions and millions of years of erosion.
2006-11-19 07:47:02 · answer #8 · answered by kellenraid 6 · 2⤊ 1⤋
It is, actually, but the craters get eroded away by water and covered up by tectonic activity and plants.
2006-11-19 07:46:48 · answer #9 · answered by cosmo 7 · 3⤊ 0⤋
Because the earth has an atmosphere that prevents most meteors from actually landing.
2006-11-19 07:46:45 · answer #10 · answered by Anonymous · 2⤊ 1⤋