|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Asteroid impact question
So now we all know that the next time you see an extremely bright
fireball, get away from the windows, and hide under the bed and wait for the bang. However it strikes me that what Chelyabinsk had was a 'glancing' impact. A couple of hundred miles further out and it would have just sailed past. Which raises some questions: If an asteroid hits the outer atmosphere, does the drag draw it *in*, or does the pressure wave push it *out*? Secondly, if the Chelyabinsk object had come in vertically, at what height would it have exploded? I'm guessing that for the first, drag wins. On the second, that the thing was moving so fast that it would have been near to or at ground level. |
#2
|
|||
|
|||
Asteroid impact question
On Mar 22, 8:41*pm, "Fevric J. Glandules"
wrote: So now we all know that the next time you see an extremely bright fireball, get away from the windows, and hide under the bed and wait for the bang. However it strikes me that what Chelyabinsk had was a 'glancing' impact. *A couple of hundred miles further out and it would have just sailed past. Which raises some questions: If an asteroid hits the outer atmosphere, does the drag draw it *in*, or does the pressure wave push it *out*? Secondly, if the Chelyabinsk object had come in vertically, at what height would it have exploded? I'm guessing that for the first, drag wins. *On the second, that the thing was moving so fast that it would have been near to or at ground level. NBC news saturday reported another fairly large incoming that appears to have fallen in the ocean, nasa said it was a asteroid.... interesting the rate of thes are up.... |
#3
|
|||
|
|||
Asteroid impact question
On Mar 24, 10:04*am, bob haller wrote:
On Mar 22, 8:41*pm, "Fevric J. Glandules" wrote: So now we all know that the next time you see an extremely bright fireball, get away from the windows, and hide under the bed and wait for the bang. However it strikes me that what Chelyabinsk had was a 'glancing' impact. *A couple of hundred miles further out and it would have just sailed past. Which raises some questions: If an asteroid hits the outer atmosphere, does the drag draw it *in*, or does the pressure wave push it *out*? Secondly, if the Chelyabinsk object had come in vertically, at what height would it have exploded? I'm guessing that for the first, drag wins. *On the second, that the thing was moving so fast that it would have been near to or at ground level. NBC news saturday reported another fairly large incoming that appears to have fallen in the ocean, nasa said it was a asteroid.... interesting the rate of thes are up.... As long as the Sirius Oort clout is closing in, it's hardly unexpected. Should eventually get up to one an hour, although that probably isn't going to get that bad for at least another thousand years. In other words, we have lots of time to wait and see. If nothing else, it's going to make folks a lot more religious, or at least thanking their lucky stars each time the next one misses their home, school or business. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
A QUESTION OF SIZE AND MASS: ASTEROID IMPACT | Glenn[_3_] | Misc | 11 | February 10th 10 07:24 PM |
Asteroid - Mars non-impact question | _ | Amateur Astronomy | 22 | January 4th 08 08:52 PM |
ASTEROID IMPACT: A QUESTION OF SIZE AND MASS | [email protected] | Misc | 12 | February 25th 07 11:53 PM |
Asteroid impact now put at level 4 | Ray Vingnutte | Misc | 1 | December 28th 04 02:11 AM |
Want to simulate an asteroid impact? | Professor Fate | Astronomy Misc | 2 | April 10th 04 04:42 PM |