Meteorite crash in Russia

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Agent Ironside said:
Ah I love this type of stuff. Any time something goes beyond what we think we know or can predict, I get excited.
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Yeah, I love everything about stuff like this, even though it can be pretty scary to imagine the implications at times. Still, it's better to know than to not know, and there's probably a lot of interesting science that will come from analyzing the videos of this event.

Teknoman said:
Would it be possible to have some near earth object defense system, or is that something outside our reach with current tech?
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What, like a series of lasers or something to shoot potential threats out of the sky when detected?

Really depends on the size of the object. If it's of sufficient size, you might just break it up to chunks and cause even more damage; might not be worth the risk. It also depends on the consistency of the object. Really, if we want to stop truly dangerous asteroids/comets, we have to detect them with some time before hand so we can take steps to nudge it out of the way or something like that... if we're too late, the potential risks of any action might outweigh the benefits (although obviously if an object has the power to, say, destroy a country, it might be worth any risk we could take).

commedieu said:
You know, thats what I'm reminded of. There was some special on about the amount of objects we just simply don't have the budget/time to track. That its a very, very, realistic threat to be hit by unknown asteroids.

This is terrifying that it can just happen like this without any real warning.
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Yup. It's why we have to keep expanding the budgets for the type of computer systems/observatories that can detect objects, and go even smaller than we can go now on that. Of course, some might say relative to the time scale the truly dangerous ones hit at, it's not worth the investment... but these are short sighted people :P
 
I was thinking along the lines of just nudging it out of the way, or changing its course enough to where it wouldnt hit/circle around and hit in the future. Hopefully the Russia and Cuba meteorites will help those short sighted people gain a little better perspective.
 
I can only imagine what would be going through the head of someone present for the blast. I sure as hell would have been digging a hole in the ground as quickly as possible. Absolutely fascinating footage to be sure, though. Anyone found any more info about the one of Cuba earlier this week?

I've never understood people's insistence that money spent on NASA and space is inefficient. Granted objects of this size would be extraordinarily difficult to detect and do anything with in an appreciable amount of time, but the idea that we're only scanning maybe 3% of the sky for NEO's (for which we now actually have the resources to do something about) is just preposterous. Plus, one way or another, humanity WILL eventually have to leave this rock, so what better time than the present to plan for the future of the species.
 
CrunchyFrog said:
I can only imagine what would be going through the head of someone present for the blast. I sure as hell would have been digging a hole in the ground as quickly as possible. Absolutely fascinating footage to be sure, though. Anyone found any more info about the one of Cuba earlier this week?

I've never understood people's insistence that money spent on NASA and space is inefficient. Granted objects of this size would be extraordinarily difficult to detect and do anything with in an appreciable amount of time, but the idea that we're only scanning maybe 3% of the sky for NEO's (for which we now actually have the resources to do something about) is just preposterous. Plus, one way or another, humanity WILL eventually have to leave this rock, so what better time than the present to plan for the future of the species.
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it was SOVIET RUSSIA so everyone looked up at the sky passively and continued on their way


no seriously there are some videos where you can see dozens of people doing exactly that as a giant flaming ball flies through the sky and then sonic booms lol

like a casual glance in that direction and then they keep swaggin' the other way haha
 
GK86 said:
That looks amazing. Hopefully it didn't cause too much damage.
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21:39 GMT: Meteorite fragments have damaged 2,962 buildings including 34 healthcare facilities, 11 social security institutions and 361 school and pre-school educational institutions, Russian Emergencies Ministry said.
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(I think the damage is more due to the blast wave rather than fragments)
 
SJkcfiV.gif
 
My idea for a gravity canon that shoots meteors by pulling its gravitational force away towards another direction would be perfect for near earth defense.

I'm going to take another physics class and get to work in it.
 
I hope this is next

tumblr_mhb5utfT0Z1rgonsxo1_500.gif


If I could choose to die in one way I would like it to be something like this. I mean, it's like the ultimate experience.
 
Woorloog said:
Light object at very fast speed can have more energy than a massive object at slow speed. Kinetic energy is funny. But usually, when an object enters Earth's atmosphere, the more massive it is, the more energy it releases.

EDIT Partially applicable here: http://www.projectrho.com/public_html/rocket/spacegunconvent.php#id--Kinetic_Kill_Weapons
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I think all should have learnt about this from the master by now, but it seems that people need more Bruce Lee in their life
 
Didn't this thread get locked last night? Why was it revived?

Anyway it reminded me of the silver surfer or something, looks really cool.
 
bytesized said:
I hope this is next

tumblr_mhb5utfT0Z1rgonsxo1_500.gif


If I could choose to die in one way I would like it to be something like this. I mean, it's like the ultimate experience.
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You know thats an entire planet (twice the size of earth at least) right? I can understand watching a meteor crash or something, but I wouldnt want nothing to be left after I took off.

Angry Fork said:
Didn't this thread get locked last night? Why was it revived?

Anyway it reminded me of the silver surfer or something, looks really cool.
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I guess someone thought it was fake or from an unreliable source?
 
Xun said:
I found this funnier than I should have.

What film is this?
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Melancholia

Teknoman said:
You know thats an entire planet (twice the size of earth at least) right? I can understand watching a meteor crash or something, but I wouldnt want nothing to be left after I took off.



I guess someone thought it was fake or from an unreliable source?
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Well, at least it would be like an amazing thing to see. Better than dying in some stupid embarrassing way.
 
Meteors are scary, but fascinating.

One of my dreams is that one day Humanity will finally re-shift our focus back to the stars.

There so much amazing stuff out there that we could use to better ourselves. How can we not care? Why do we spend so much money on hurting each other and not on finally leaving this planet?

It boggles my mind.
One day we will be forced to leave whether we want to or not. I hope we're ready when that happens.

Rants bla
 
AstroNut325 said:
A little outdated, but appropriate (not quoting for impact):
worldwide_wilitary_budget_over_worldwide_space_budget.jpg
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This is why I don't listen to bullshit arguments about 'we don't have the money' for space exploration. Not only this but tons of other shit we waste money on. Apple alone could afford a dozen manned trips to Mars without issue, it's ridiculous.
 
I love the video of the guy just driving along and then a huge fireball...but he doesn't freak. I would have run off the road. I saw a meteor fall while driving down the highway a few weeks ago.

Some interesting stuff when it comes to terminology:

Most of us probably have seen meteors or shooting stars. A meteor is the flash of light that we see in the night sky when a small chunk of interplanetary debris burns up as it passes through our atmosphere. "Meteor" refers to the flash of light caused by the debris, not the debris itself.
The debris is called a meteoroid. A meteoroid is a piece of interplanetary matter that is smaller than a kilometer and frequently only millimeters in size. Most meteoroids that enter the Earth's atmosphere are so small that they vaporize completely and never reach the planet's surface.
If any part of a meteoroid survives the fall through the atmosphere and lands on Earth, it is called a meteorite. Although the vast majority of meteorites are very small, their size can range from about a fraction of a gram (the size of a pebble) to 100 kilograms (220 lbs) or more (the size of a huge, life-destroying boulder).
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Source: http://hubblesite.org/reference_desk/faq/answer.php.id=22&cat=solarsystem
 
http://www.dailytelegraph.com.au/ne...-injuring-people/story-fnddckzi-1226578976770
Scientists estimated the meteor unleashed a force 20 times more powerful than the Hiroshima bomb, although the space rock exploded at a much higher altitude. Amy Mainzer, a scientist at NASA's Jet Propulsion Laboratory, said the atmosphere acted as a shield.

The shock wave may have shattered windows, but "the atmosphere absorbed the vast majority of that energy,'' she said.
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And that's probably how majority of people were injured.
(Explosion at 00:10)
http://www.youtube.com/watch?v=v76v0JYB7Fw
 
Übermatik;47782818 said:
That's not it exploding, that's it breaking the sound barrier. It may have broken up after it reached the speed of sound.
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What? It already entered the atmosphere at more than 20,000 miles per hour...
 
Here's a fun video to watch.
http://www.youtube.com/watch?v=ONUSP23cmAE

edit : I can do a better job at this, it details the evolution of our sky watching tech, from 1980 through to 2011, there's a lot of rocks spinning around us.

Double edit : full screen it. HD it, for effect. It's mind numbing to think of just how many rocks are out there.
 
So, how did we not know? Scares me to think we didn't know.

Any chance we can observe for life, or is the fiery explosion just that?
 
So damn cool and interesting. Freaky we didn't know it was coming.

Also interesting , on msnbc, they explained why alot of cars have cameras mounted on them over there. It's because of so many accidents and insurance won't cover you if you can't prove what happened, hence the need for the cameras .

That's interesting too, haha.
 
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