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[SPACE] Meteorite Falls in Eastern Russia, Causes Damage: Reports - Page 14

post #131 of 244
2/15/13 at 6:07pm
Quote:
Originally Posted by ASSSETS View Post

On twitter people posting that it was huge explosion and window were broken from wave.
I heard it blew out all the windows within a certain radius, schools, stores, and houses lost all of their windows. biggrin.gif
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post #132 of 244
2/15/13 at 6:35pm
Quote:
Originally Posted by Mac the Geek View Post

In addition, systems built to detect ICBMs are looking in the wrong directions to detect NEOs. Ground-based radars are focused on the horizon, while space-based radars are focused down towards the planet's surface. Even if a meteor approached Earth in full view of a ground-based radar, its position outside the atmosphere would probably cause the image-processing software to ignore it.

thumb.gif

Radars have a lot of technical limitations and require very specific design criteria to detect certain objects. I advise everyone reading this thread to take a second and google/wiki the basic principles of radar to get a basic understanding of this topic.
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post #133 of 244
2/15/13 at 6:44pm
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Quote:
Originally Posted by DayoftheGreek View Post

thumb.gif

Radars have a lot of technical limitations and require very specific design criteria to detect certain objects. I advise everyone reading this thread to take a second and google/wiki the basic principles of radar to get a basic understanding of this topic.

Or to truly conceptualize just how damn fast 33,000mph is, and why it is so hard to see something moving at that velocity.
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post #134 of 244
2/15/13 at 6:54pm
Quote:
Originally Posted by Avonosac View Post

Or to truly conceptualize just how damn fast 33,000mph is, and why it is so hard to see something moving at that velocity.

For reference, 33,000mph is 15.4 km/s and the terminal speed of ICBM warheads during re-entry according to this 1963 study is only 9.5km/s.
Edited by sherlock - 2/15/13 at 6:56pm
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post #135 of 244
2/15/13 at 7:16pm
Quote:
Originally Posted by aroc91 View Post

There is a HUGE difference between detecting and tracking a missile on Earth and tracking an interstellar object from millions of miles away traveling at 50 km/s.

Let's put you in an observatory and see how successful you are at identifying and tracking celestial objects. Nobody's perfect and keeping tabs on the entire sky is a huge project.

I think what he's getting at is that the asteroids we know about, don't hit us. But the one we don't see coming, hits us. Isn't this strange to you?
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post #136 of 244
2/15/13 at 7:26pm
Quote:
Originally Posted by aweir View Post

I think what he's getting at is that the asteroids we know about, don't hit us. But the one we don't see coming, hits us. Isn't this strange to you?

No it is not. We only know about them because they hit us. There are plenty we don't know about that miss us so we never know about them. And plenty we don't know about that hit us every single day, but aren't big enough to cause damage. Or they are big enough to cause damage, but they land somewhere unpopulated.
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post #137 of 244
2/15/13 at 7:26pm
Optimus Prime failed to enter our earth now were doomed

Russians killed him
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post #138 of 244
2/15/13 at 7:27pm
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Quote:
Originally Posted by aweir View Post

I think what he's getting at is that the asteroids we know about, don't hit us. But the one we don't see coming, hits us. Isn't this strange to you?

Why would that be strange? We can't track what we can't see and we can't keep an eye on everything.
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post #139 of 244
2/15/13 at 7:43pm
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Originally Posted by F1ynn View Post

weird but on another picture the rubble is laying next to the building like in a perfect cleanup fashion. Did they clear the road already or was it a nice meteor that gently let itself down?
I for one would highly doubt any kind of serious rubble. The meteor was said to be going around 33,000 MPH. So it had to be going thousands of mph when it struct earth. Crashing through a couple of buildings, especially brick buildings. I would imagine the meteor disintegrated most of them breaks upon impact as you can see here.
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post #140 of 244
2/15/13 at 10:14pm
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Maybe not so common as some people on here are trying to claim.

This meteorite was the biggest to hit the earth since Tunguska. About 15m across. A single 4m meteorite hits about once every year.
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