ID:7084
 Dec 31 2005, 6:18 am (Edited on Dec 31 2005, 6:32 am)
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Ye-gads, so some people talk about the world as we know it ending, and 2005 being doomed to end...And even how the world as....well, the world will end...You might know about this site, but it's got a list of all sorts of ways the world might end, soon or far away, whether due to Geological, Biological, or even Religious influences! This web page is called Exit Mundi! It might give you chills, or it might be an interesting find, or you might already have known about this, but either way, it's a great reccomendation!
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An asteroid that could de-orbit Earth would destroy all macroscopic life on the planet ANYWAY.
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Asteroids are ridiculously scary.
The probability of a big one hitting Earth is nearly nil, but if one DID, then we'd pretty much be screwed. It couldn't possibly knock Earth far out of orbit - There just aren't any bodies big enough to do it (That aren't planets - Planets are stable). They could still make the place uncomfortable, with the vulcanism, and the nuclear winter, and the GLAvin! And we probably wouldn't see the damned thing coming until it was too late. And even if we did see it earlier, stopping it is ridiculously difficult. Nuking the damned thing will just split it up into several fragments travelling towards the Earth at high speed - Still very nasty. That's still the same amount of kinetic energy being dumped onto the Earth. About the only thing you can do is cover one side in white paint or something like that. Give it enough time, that can deflect it - It doesn't have to move much to miss the Earth. But you have to get only one side of the damned thing. | |
Jp... A common astroid is at least 3x the size of earth. :) Your thinking comets! have fun boggling that. And its just gravity! :) we will just have a shorter year and it would be hotter, For the new species of life if the earth even survives inpact
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<QUOTE>A common astroid is at least 3x the size of earth</QUOTE>
Who was/is your science teacher? That is so ridiculously, unbelievably wrong that it scares me. Things that are three times the size of Earth are, funnily enough, planets. Although, there aren't any planets that are three times the size of Earth. There a few that are a little smaller, a few that are a little bigger, one that's about the same size as the Moon, and a few that are much, MUCH larger than Earth. <QUOTE>Your thinking comets!</QUOTE> Your english teacher, too. <QUOTE>And its just gravity!</QUOTE> Ummm... what does that mean, precisely? And once again, english. <QUOTE>we will just have a shorter year and it would be hotter</QUOTE> Once again, please talk to somebody who actually understands physics. It is highly, HIGHLY unlikely that an asteroid strike would knock the Earth into a closer orbit. It is far more likely that Earth's orbit would just become more elliptical - In that case, the effects on the length of a year would be unpredictable, and it would likely get hotter in some periods and colder in others. Of course, that's if the asteroid hit orthogonally. If it hit somewhere along the line of orbit, that would be different. Of course, there would also be effects on the axial tilt, and the rotation rate. They would be far, FAR more prominent then the orbital effects. Here's a little help: Ceres That's the largest asteroid in the asteroid belt. If 750 km in diameter is three times bigger then Earth, you've got a very small world after all. | |
Its great to know, that our astroid belt has the only astriods in the entire universe.
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Why don't we ask Jamesburrow, I'm sure he will enlighten us.
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hahahah Xeal :)
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<QUOTE>
Its great to know, that our astroid belt has the only astriods in the entire universe. </QUOTE> In what way did I imply that? You said that asteroids are at least three times bigger than Earth. Ceres is an asteroid. Ceres is nowhere near three times bigger then Earth. Ceres is the biggest asteroid we know of in the asteroid belt. And it's still much, much smaller than three times the size of Earth. It's smaller than three times the size of the moon. It is small. In general, most asteroids are around those sorts of sizes. You do get scattered large objects in the 'halos' around the outside of galaxies (The Kuipier belt), but even those objects are smaller then Earth. The biggest one we know of currently rejoices in the name UB313 and it is only 2700 KM in diameter - Also small. There may be planets floating around in deep space, free of any particular solar system, but rocky planets can only get so large. There is a limit. If you're any bigger than that, you can start collecting some of the gases that are common in the universe. Once it can attract and retain helium, ammonia, and water, it's going to become massive. Basically, three times the size of Earth may be within that limit, but there are NOT going to be many rocky objects that size. And they wouldn't be asteroids - They'd be planets. Or planetoids, depending upon which definitions you favour. | |
I posted a few ways on how it might end and how we already have the power to survive with the acception of the sun engulping us; or an astrioid simply hitting earth like a baseball and sending it hurdleing at the sun.
-Lifehunter