Comments on: Space Junk May Force Crew from ISS http://www.universetoday.com/2009/11/06/space-junk-may-force-crew-from-iss/ Space and astronomy news Sun, 21 Mar 2010 17:06:45 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: SteveZodiachttp://www.universetoday.com/2009/11/06/space-junk-may-force-crew-from-iss/comment-page-1/#comment-72861 SteveZodiac Sun, 08 Nov 2009 18:21:59 +0000 http://www.universetoday.com/?p=44349#comment-72861 and of course all the energy wouldn't all be transferred but I was just trying get an idea of the energies involved and 1/10 gram yielding 40 VW Golf engines is enough visualisation to me. and of course all the energy wouldn't all be transferred but I was just trying get an idea of the energies involved and 1/10 gram yielding 40 VW Golf engines is enough visualisation to me.

]]> By: SteveZodiachttp://www.universetoday.com/2009/11/06/space-junk-may-force-crew-from-iss/comment-page-1/#comment-72860 SteveZodiac Sun, 08 Nov 2009 18:16:15 +0000 http://www.universetoday.com/?p=44349#comment-72860 Dr Flimmer Good point I am assuming that the speed of the fleck is relative to the ISS which would be geostationary which of course it coudn't be in that orbit, however, If it is going the other way at 7710 m/sec then double ouch. Dr Flimmer
Good point I am assuming that the speed of the fleck is relative to the ISS which would be geostationary which of course it coudn't be in that orbit, however, If it is going the other way at 7710 m/sec then double ouch.

]]> By: Hans-Peter Dollhopfhttp://www.universetoday.com/2009/11/06/space-junk-may-force-crew-from-iss/comment-page-1/#comment-72854 Hans-Peter Dollhopf Sun, 08 Nov 2009 16:45:23 +0000 http://www.universetoday.com/?p=44349#comment-72854 The risk of a collision with space junk needs to be set in relation to the value of the affected object.What is the most valuable artifical object currently in space? Of course, by far, the ISS. It is the most expensive and most valuable object of them all up there. This value is even more increased by the instance that the lives of the crewmembers are endangered by a crash.Furtheron, the risk of a collision for an object has to be set in relation to the redundancy linked to that object. For example, hile Iridium 33 could very quickly be replaced after its crash with Cosmos 2251, there is no backup for the ISS.Also the meaning of a space object for human activities here on the surface of the planet. A damaged communication satelite could interrupt daily business and thus cause further loses. But with the crash of the ISS our hopes and our dreams might be killed. The risk of a collision with space junk needs to be set in relation to the value of the affected object.

What is the most valuable artifical object currently in space? Of course, by far, the ISS. It is the most expensive and most valuable object of them all up there. This value is even more increased by the instance that the lives of the crewmembers are endangered by a crash.

Furtheron, the risk of a collision for an object has to be set in relation to the redundancy linked to that object. For example, hile Iridium 33 could very quickly be replaced after its crash with Cosmos 2251, there is no backup for the ISS.

Also the meaning of a space object for human activities here on the surface of the planet. A damaged communication satelite could interrupt daily business and thus cause further loses. But with the crash of the ISS our hopes and our dreams might be killed.

]]> By: Aquahttp://www.universetoday.com/2009/11/06/space-junk-may-force-crew-from-iss/comment-page-1/#comment-72822 Aqua Sat, 07 Nov 2009 06:17:06 +0000 http://www.universetoday.com/?p=44349#comment-72822 Didn't cosmonauts aboard MIR hear several meteoric(?)/or space junk impacts? The Mir station did get a few holes in the solar panels the size of a quarter after a meteor shower... Didn't cosmonauts aboard MIR hear several meteoric(?)/or space junk impacts? The Mir station did get a few holes in the solar panels the size of a quarter after a meteor shower…

]]> By: DrFlimmerhttp://www.universetoday.com/2009/11/06/space-junk-may-force-crew-from-iss/comment-page-1/#comment-72816 DrFlimmer Fri, 06 Nov 2009 21:33:26 +0000 http://www.universetoday.com/?p=44349#comment-72816 SteveZodiac,I think, you're calculation only holds if the object collides with a relative speed that matches the speed of the ISS, right?Sadly, I haven't seen any news about the real relative speed and what kind of object this is. Why must momentum always be conserved?Anyway: Good luck ISS! SteveZodiac,

I think, you're calculation only holds if the object collides with a relative speed that matches the speed of the ISS, right?

Sadly, I haven't seen any news about the real relative speed and what kind of object this is. Why must momentum always be conserved?

Anyway: Good luck ISS!

]]> By: SteveZodiachttp://www.universetoday.com/2009/11/06/space-junk-may-force-crew-from-iss/comment-page-1/#comment-72811 SteveZodiac Fri, 06 Nov 2009 19:23:13 +0000 http://www.universetoday.com/?p=44349#comment-72811 I did some calculations and a 1/10 gram object travelling at the speed of the ISS (7710 m/sec) has an energy of 2972 Joules. A joule is 1 Watt second so if you bring the object to rest in 100th of a second (that will take 77 metres) then it will impart an energy of 207Kw - ouch! I did some calculations and a 1/10 gram object travelling at the speed of the ISS (7710 m/sec) has an energy of 2972 Joules. A joule is 1 Watt second so if you bring the object to rest in 100th of a second (that will take 77 metres) then it will impart an energy of 207Kw – ouch!

]]> By: stargeezerhttp://www.universetoday.com/2009/11/06/space-junk-may-force-crew-from-iss/comment-page-1/#comment-72810 stargeezer Fri, 06 Nov 2009 19:12:51 +0000 http://www.universetoday.com/?p=44349#comment-72810 I foresee a great future for space junk collectors. And space recycling depots. And space tugs and tow trucks. And taxi services. And space spysat remov... er - never mind. Maybe just space junk collectors. I foresee a great future for space junk collectors. And space recycling depots. And space tugs and tow trucks. And taxi services. And space spysat remov… er – never mind. Maybe just space junk collectors.

]]> By: Silihttp://www.universetoday.com/2009/11/06/space-junk-may-force-crew-from-iss/comment-page-1/#comment-72806 Sili Fri, 06 Nov 2009 18:28:51 +0000 http://www.universetoday.com/?p=44349#comment-72806 Is there a radar on the ISS to help chart this junk for future reference? Is there a radar on the ISS to help chart this junk for future reference?

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