no more reptar?

http://janus.astro.umd.edu/astro/impact/

I know there's a better simulator out there but this one has marvin the martian

Lol of course one that size never hit. The biggest one was what 10km? Evidence.. Dinosaurs are gone aren't they?

That's like saying the Dodo bird (which is extinct, but only in the last 400 yrs) suffered the same fate.

well in the video it said that's happened 6 times already (their simulation) which is what I was arguing. Something of that size in the video would knock the earth out of orbit and/or shatter the planet.

6 times an astroid has hit the earth.. but none were that big.. what was the biggest recorded astroid to hit earth? 10km? Not 500km or however big that was.

we've established that already, sam...lol

:lol: or do exactly what the simulation showed. come on now!

there are more factors that a 500km asteroid or whatever.

who is to say earth isn't in a different orbit?

what does the ocean floor look like?

remember pangea? might have missed land or more land was shaped over the impact crater. also, as a few mentioned, never did they say this big of an asteroid.

http://upload.wikimedia.org/wikipedi...continents.png

http://www.southafrica.info/about/ge...ort-080605.htm

don't know the accuracy of it but there ya go Knipps

my point is a 500km asteroid would shatter the earth and wouldn't leave a crater like the simulation.

:rofl: i'm sorry but i am going to need to see qualifications for this statement. i don't think the earth is made out of glass so we should be ok....

seriously, it's like two rocks colliding into each other. They're gonna "explode," or as I said, shatter, into a million peices. But then again, you need to factor in the angle they hit. The way the video has it depicted is it's pretty much a head on collission.

there are sooooooooooooooooooooooooooo many more factors though!!!!

Lol i didn't know what the hell i was reading Pat.. but bmxrider is right.. theres more factors that into it beside the fact that one big hard round thing collided with another big hard round thing

i didn't say he was wrong either. Just the video seems to be a misconception. They're saying its a 500km rock, where nothing ever that big ever hit earth except in the earliest of stages in formation. Anyway, the biggest thing we have to concern ourselves with even coming close to getting hit by is Apotheosis. 415 meters in diameter.

Not that any of us are qualified to answer but what makes you think that a 500km asteroid would shatter our planet? Our planet is about 13000km in diameter, or 26 times bigger than the said asteroid. While 99% of life on Earth would surely be wiped out I highly doubt our planet would shatter in a million pieces.

I actually watched a Discovery special on this recently.

The Earth has been hit several times by "mega asteroids" before. They can apparently tell by the kind of rock found in different areas as well as the shape that it is sitting. They actually showed how they proved that the Gulf of Mexico is the largest impact crater on the planet.

That video showed the firestorm part a bit different though. According to the show I saw there would be a massive burn off in the last thousands of miles before and once the meteor entered the Earth's atmosphere. The pieces that fly off as a result would incinerate in the atmosphere and basically act like a series of nuclear explosions big enough to level even the biggest sprawling cities on the planet.