Skip to comments.Deep Impact, post impact video
Posted on 07/04/2005 4:17:26 PM PDT by hophead
NASA's film of the impact are incredible. One from the impactor and one from the fly-by craft. Look here: http://www.nasa.gov/mov/121530main_its_approach_x4.mov http://www.nasa.gov/mov/121527main_MRI_impact.mov
Watch the one from the impactor. Early in the film, the camera seems to aquire a target, as it was probably supposed to do by design. Keep watching frame by frame. You will see two large craters come into clear view at the center section of the frame. As it gets closer, it seems to target a spot just below the upper crater. Just south south west of the craters looks like a frozen lake. It is very much smoother than anything around. The target spot looks like a mound of ice and dust. The impactor draws a good bead on this feature. At one point its track varies from target but then re-aquires its target. This mound is about 1/13th the diameter of the crater above it. My question is: What are the dimensions of the mound in target and what is the diameter of the upper large crater above target. It seems to me to be pretty damn amazing to hit this object from millions of miles away goimg about 28,000 miles per hour. I sent a letter to NASA to get this info. If anyone else has it please send it in. I am also excepting guesses of the size of thet target. My guess is in the 500-2000 foot high range.
Note - this is the same tech that would be used in the "Rods From God" project. A self-contained, self-guiding impactor or KKV.
Great videos, thanks for the links.
Way cool. Thanks for the post!
If we can hit an asteroid, we can hit an incoming missle
The diameter of the crater in the last few images was given as 1500 meters.
Sure, if it is a few miles wide, we have months to plan the flight, and constantly measure and tweak the trajectory for a couple more months.
Other than the speed, I don't see a whole lot of similarity between the two events.
/not a scientist
//didn't stay at a Holiday Inn Express
Too bad CBS couldn't get Dan Rather out there to do a remote...
This is the technology,,along with a penetrator nuc warhead that could be used to destroy a astroid on collision course with the earth. They could target a specific spot on the rock to penetrate and either shift to orbit or reduce it to smaller pieces..
This is what we want to see-- blowing holes in stuff with spaceships. Happy Fourth!
Still in all, this was a brilliant feat by the folks at JPL hitting something cosmically tiny tens of thousands of miles away at tens of thousands of miles per hour.
If an asteroid or comet is ever heading towards earth. nuclear weapons are very unlikely to play a role in "diverting" or "destroying" it (the second is really not possible and smaller pieces in many cases doesn't make things better) contrary to popular belief.
Sounds bigger than what was expected. Maybe the body is softer than it looked.
Eh, I don't think there's much tech overlap at all. And it wasn't really hit; it was something miles wide that we had studied the orbit of for decades, and which was stable in that orbit, that we left something IN FRONT OF.
ABM defense is a problem that is infinitely more difficult, particularly if you have humans on the other side actively attempting to spoof it (decoys, etc.)
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