Re: Blowing up Hayabusa
- From: "Jordan" <JSBassior2001@xxxxxxxxx>
- Date: 3 Jun 2006 06:54:39 -0700
Robert Sneddon wrote:
In message <Lr6dnQAqj_oLwRzZRVnyrA@xxxxxx>, Mike Dworetsky
<platinum198@xxxxxxxxxxxxxxxxxxxx> writes
You don't want a bang, you want a safe deflection of an asteroid. If
asteroids are loose "flying gravel banks", blowing them apart will just
result in reassembly, as their self-gravity is enough to do this.
If the impetus given to the pieces exceeds the escape velocity of the
cluster then they won't come back together. If they expand into a large
cloud many Earth-diameters in size and then reassemble over a period of
several months or years then by choosing the timing wisely you could
cause most of the cloud to miss the Earth. This is a lot easier to
achieve than blowing up or diverting a solid chunk of rock.
You also aren't limited to just _one_ attempt to deal with the
asteroid, unless your warning comes very late. You could for instance
destroy an asteroid, then in a follow-up mission destroy or divert the
most dangerous fragments. Or attempt to divert an asteroid by one
technique, and if this didn't look as if it was working for whatever
engineering reasons, try another technique.
Again, the more advance the warning, the better.
- Jordan
.
- References:
- Blowing up Hayabusa
- From: Gene Ward Smith
- Re: Blowing up Hayabusa
- From: Mike Dworetsky
- Re: Blowing up Hayabusa
- From: Hyper
- Re: Blowing up Hayabusa
- From: Mike Dworetsky
- Re: Blowing up Hayabusa
- From: Robert Sneddon
- Blowing up Hayabusa
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