NASA attempts to do that and does the best they can with the limited reasources solely focused on detection. The meteor that crashed over Russia a few years back came out of nowhere, no one detected it or saw it coming. Stuffs out there and eventually we'll hit it.

Space is a massively big place but our little corner of it has millions of chunks of rocks or ice floating around the sun at incredible speeds. We certainly don't know where they all are and their orbits and ultimately I can see a hit from one of these being the end of civilization. It's a very real possibility that we should take more seriously.

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Posted by DavidTheGnome

Monroe

Member since Apr 2015

29165 posts

Posted on 12/6/16 at 10:32 pm to tiggerthetooth

quote:
I can't even begin to dissect why your "earth would look exactly like the moon" statement is wrong. Try physics, gravity, mass, orbits, etc.. earth is COMPLETELY different from the moon for many reasons.

So the moon's gravity is an asteroid attracter but our much more massive gravity well isn't. I'd love to hear your explanation if you'd be kind enough to entertain.

quote:
Many of the strikes on the moon are old. Very, very old. Not only that, the bigger ones act as resurfacing events, essentially wiping out the older ones, which means the bombardment goes way back. Now the Earth is much bigger than the moon, and was in the roughly the same pathway as the moon. So if the moon is that pockmarked, and Mars is quite pockmarked, it only stands to reason that Earth has had its share of meteor events.

Why don't we see the same evidence? Well, the Earth is very active, with a molten core, plate tectonics, and weather. Most of these events happened before life, since many of them would wipe out any complex life. The moon and Mars then act as a map to the past, and if we can tease out the bombardment history of these two things, we can logically assume the same thing happened to Earth.

This post was edited on 12/6/16 at 10:45 pm

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