Duck and Cover, International Space Station style

[Starman]

http://www.cnn.com/2009/TECH/03/12/space.station.scare/index.html?iref=24hours

As that thing gets bigger and bigger -- in a half-decent pair of binoculars, you can kinda make out its shape -- the chance it's eventually gonna get drilled by a piece of space junk rises pretty much proportionately. Hopefully if (more likely when) it happens, it won't happen in an immediate section where people are.

The story is somewhat badly written in that it implies the piece of metal was traveling at a speed of 20,000 mph in relation to the ISS -- because of orbital mechanics that's extremely unlikely, more likely the relative speed is only about 2,000 mph. But in any case, if you get hit with a 5-inch piece of metal going 2,000 mph, you in a heap of trouble.

 

[Rusty Shackleford]

Would it even matter if space junk hit an unoccupied spot? I've always understood something like that to cause an almost immediate vacuum of everything inside -- like a deep sea vessel rupturing, but in reverse.

 

[TigerVols]

The audio tape of the Astronaut when she's told she can exit the Soyuz is hillarious...one word, "Great," at the highest octive I have ever heard.

 

[mustangj17]

I love that the object was our own damn space motor. What, do we have GPS on all those ****ing things that we drop all over space?

 

[Starman]

Would it even matter if space junk hit an unoccupied spot? I've always understood something like that to cause an almost immediate vacuum of everything inside -- like a deep sea vessel rupturing, but in reverse.

Not all parts of the ISS are habitable pressurized areas.

If junk clips one of the solar panels, for instance, it would be a problem (ranging from minor to disastrous), but not instant catastrophic depressurization.

 

[Football_Bat]

http://www.cnn.com/2009/TECH/03/12/space.station.scare/index.html?iref=24hours

As that thing gets bigger and bigger -- in a half-decent pair of binoculars, you can kinda make out its shape -- the chance it's eventually gonna get drilled by a piece of space junk rises pretty much proportionately. Hopefully if (more likely when) it happens, it won't happen in an immediate section where people are.

The story is somewhat badly written in that it implies the piece of metal was traveling at a speed of 20,000 mph in relation to the ISS -- because of orbital mechanics that's extremely unlikely, more likely the relative speed is only about 2,000 mph. But in any case, if you get hit with a 5-inch piece of metal going 2,000 mph, you in a heap of trouble.

On the other hand, if the piece of junk is in a retrograde orbit, it could hit at a combined 40,000 mph.

Energy equals mass times the square of the velocity.

 

[User 1019]

I love that the object was our own damn space motor. What, do we have GPS on all those ****ing things that we drop all over space?

Sort of. I actually got to go inside the site at Diego Garcia. Way cool.

http://en.wikipedia.org/wiki/United_States_Space_Surveillance_Network

 

[Armchair_QB]

As big as that ****er is I'd be more concerned about what happens if its orbit disintegrates after a collision and it drops out of the sky.

 

[Starman]

http://www.cnn.com/2009/TECH/03/12/space.station.scare/index.html?iref=24hours

As that thing gets bigger and bigger -- in a half-decent pair of binoculars, you can kinda make out its shape -- the chance it's eventually gonna get drilled by a piece of space junk rises pretty much proportionately. Hopefully if (more likely when) it happens, it won't happen in an immediate section where people are.

The story is somewhat badly written in that it implies the piece of metal was traveling at a speed of 20,000 mph in relation to the ISS -- because of orbital mechanics that's extremely unlikely, more likely the relative speed is only about 2,000 mph. But in any case, if you get hit with a 5-inch piece of metal going 2,000 mph, you in a heap of trouble.

On the other hand, if the piece of junk is in a retrograde orbit, it could hit at a combined 40,000 mph.

Energy equals mass times the square of the velocity.

True, but there are very, very, very few satellites (or associated debris) in retrograde orbits -- satellites are almost always launched in posigrade orbits (i.e. toward the east) to gain the velocity assist (about 1,000 mph) from the rotational velocity of the earth. In any case, if you get hit with a 5-inch piece of metal going 2,000, 20,000 or 40,000 mph, you're hurting.

As big as that ****er is I'd be more concerned about what happens if its orbit disintegrates after a collision and it drops out of the sky.

It's gonna be quite a problem some day, when they finally decide to mothball it, how to bring it down somewhere in the Pacific. It'll be quite a fireworks show, but you don't want to be underneath it.