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Originally posted by ranhome
Thats like asking what was the make, model and color of car that just ran you over? Not the main point
[edit on 23-2-2009 by ranhome]
[edit on 23-2-2009 by ranhome]
You said the shuttle is in orbit. At that distance this would be an impressive flashlight.
Originally posted by Phage
reply to post by Europa733
We really don't even know if it is from STS-114. There have been attempts to use this sort of misdirection before.
If I remember it correctly, the tether moved away from the shuttle and away from the Earth (it changed to a higher orbit) because it had too much speed for it to keep on that orbit, you have to remember that it was a strange object to have in orbit, an almost 20km long wire with a satellite on the top.
Originally posted by RFBurns
Second, anything falling off the shuttle is not going to get dragged off when your in a vacume. The tether video when it breaks off is the perfect example of something comming loose from the shuttle..such as your ice particle. That tether does NOT move away from the shuttle at break neck speeds. It gradually moves away as its velocity decreases since the shuttle is no longer holding on to it.
It was just a little joke.
Originally posted by RFBurns
Its quite easy to see..even in a 256 gray scale video..
We can not know the speed because we can not know the distance, it looks somewhat fast but we do not have any real way of measuring it.
an object doing manuvers at speeds unlike how just some fallen off ice particle or space junk moving into frame.
I think that an ice particle falling from the shuttle would move much slower than the tether, the tether was being pulled away by the satellite and all the kilometres of cable, the ice particles have nothing to pull them away when they fall from the shuttle, so they will keep on moving in the same direction and speed.
The tether breaking off doesnt zip away from the shuttle as if it was pulled or jerked away, it gradually moves away, as would any ice particle falling off the shuttle would do.
I think the coiling of the tether had more to do with the way it was kept before release, only the first reaction was the result of the breaking, the tether was not elastic enough.
Once it broke, you can see that the very end of the long "rope" next to the point where it broke begins to "curl" as the entire thing moves slowly away. The "curl" of the end is because of the snapping of the tether, giving some intertia motion to that part of the "rope", much like how a rubber band breaking would make the two ends travel away from each other.
That is what I think we can see on the video, the object is moving in one direction but, affected by some force, is forced to move in a different direction.
An ice particle wont zip into frame and then change direction unless something makes it move away from the shuttle and then change direction. Outside influence must play a role in the zero-G world. And that outside influence would have to be equal to or greater than the interia mass in order for it to have an effect. If its equal, it would stop, if its greater, it would move in another direction after slowing the initial motion, then proceed to move opposite direction of the influence against it.
Originally posted by ArMaP
It was just a little joke.
Originally posted by ArMaP
We can not know the speed because we can not know the distance, it looks somewhat fast but we do not have any real way of measuring it.
Originally posted by ArMaP
I think that an ice particle falling from the shuttle would move much slower than the tether, the tether was being pulled away by the satellite and all the kilometres of cable, the ice particles have nothing to pull them away when they fall from the shuttle, so they will keep on moving in the same direction and speed.
Originally posted by ArMaP
I think the coiling of the tether had more to do with the way it was kept before release, only the first reaction was the result of the breaking, the tether was not elastic enough.
Originally posted by ArMaP
I was only saying that I think that the tether moved to a higher orbit because of the dynamics of the whole system, but as I think that it has no relation to this video, maybe we should let that discussion to a different thread.
Originally posted by ArMaP
That is what I think we can see on the video, the object is moving in one direction but, affected by some force, is forced to move in a different direction.
Originally posted by ArMaP
It is also possible that the object does not slow down, and that the "stop" is just a result of the projection of its trajectory on the plane of the camera; to the camera it stopped moving in that direction, and it was the only direction the object had, but for the object it was moving along two axis, and it only stopped moving along one before going in the opposite direction, but it never stopped moving, like when we see a Nascar race, the cars seem to move much slower when they get near the turns but they reduce their speed less than it looks, it's just a question of perspective.