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#21
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"Strange Thin Glowing Cloud, Twice The Diameter Of The Moon"
ElRon XChile wrote: I do like people's suggestion that it may be secondary effects from the breakup of space junk, but the center 'light' does still look like an ignited source so the question becomes what would have re-ignited solid or liquid fuel? I've never heard of a re-ignitable solid that would work in space. Pat |
#22
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"Strange Thin Glowing Cloud, Twice The Diameter Of The Moon"
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#23
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"Strange Thin Glowing Cloud, Twice The Diameter Of The Moon"
Jim Oberg wrote: Ray Palmer back? He was an old (short) buddy of mine in the early 1970s when I wrote for his zine 'space world' and we spent cold Wisconsin evenings telling lies. I've got a eight inch high model of a Dero I made sitting on the shelf, "Mech", "Stim", forked penis and all. His name is Clarence. Pat |
#24
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"Strange Thin Glowing Cloud, Twice The Diameter Of The Moon"
On Wed, 21 Feb 2007 03:37:54 -0600, Pat Flannery wrote:
Particularly this one, which is really cool: http://www.freqofnature.com/photos/mmiii/P9192066.jpg OMG SOMEONE VAPORIZED IT It musta been aleeuns. |
#25
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"Strange Thin Glowing Cloud, Twice The Diameter Of The Moon"
In article ,
The Breeze-M upper stage in question shut down prematurely last March... What took it so long to go boom? Corrosion due to the hypergolics? That's the prevailing theory for such explosions, although nobody really knows for certain. Certainly the incidence of Delta II second-stage explosions dropped dramatically after measures were taken to drain and vent tanks (and discharge batteries) after payload release. (Mind you, it's a little disturbing that COBE's Delta II second stage -- which *had* been drained and vented and otherwise passivated -- managed to break up in December, although that might have been a collision.) -- spsystems.net is temporarily off the air; | Henry Spencer mail to henry at zoo.utoronto.ca instead. | |
#26
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"Strange Thin Glowing Cloud, Twice The Diameter Of The Moon"
In article ,
Pat Flannery wrote: Doesn't anyone know how to vent their excess propellants once orbit is reached? The US regulatory agencies insist on it. The Russians do know how, although whether they do it routinely is a slightly different question. (The Iridium guys, in particular, insisted on full debris-mitigation procedures on the upper stages of their Russian launches.) In any case, it now appears that this was a malfunctioning stage from a launch some months ago, so it's quite possible that it was programmed to do venting, but never got that far. -- spsystems.net is temporarily off the air; | Henry Spencer mail to henry at zoo.utoronto.ca instead. | |
#27
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"Strange Thin Glowing Cloud, Twice The Diameter Of The Moon"
On Feb 21, 3:02 am, Pat Flannery wrote:
ElRon XChile wrote: I do like people's suggestion that it may be secondary effects from the breakup of space junk, but the center 'light' does still look like an ignited source so the question becomes what would have re-ignited solid or liquid fuel? I've never heard of a re-ignitable solid that would work in space. That's where re-ignitable solids work best. The vacuum helps with the dP/dT required for extinguishing in the first place. |
#28
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"Strange Thin Glowing Cloud, Twice The Diameter Of The Moon"
Pat Flannery wrote:
wrote: The Breeze-M upper stage in question shut down prematurely last March, stranding the Arabsat 4A (06006A / 28943) communications satellite in a 51.5 deg, 507 X 14701 km orbit. Must have retained a large fraction of its propellant load. Blowed-up real good! What took it so long to go boom? Corrosion due to the hypergolics? It looks rather more like it took off accelerating. It would be nice to compare the different shots. -- Get A Free Orbiter Space Flight Simulator : http://orbit.medphys.ucl.ac.uk/orbit.html |
#29
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"Strange Thin Glowing Cloud, Twice The Diameter Of The Moon"
Pat Flannery wrote:
kT wrote: Ok, it's hard to reconcile the time difference. It must be this then : http://members.ozemail.com.au/~loomberah/themis.htm Oh great; first the Chinese ASAT, now this. Doesn't anyone know how to vent their excess propellants once orbit is reached? This thing probably generated a greater amount of orbital debris by mass than the Chinese one. Like I said, there ought to be some laws. We need to *DEMAND* that something be done about these upper stages. We were supposed to have this all sorted out many decades ago. -- Get A Free Orbiter Space Flight Simulator : http://orbit.medphys.ucl.ac.uk/orbit.html |
#30
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"Strange Thin Glowing Cloud, Twice The Diameter Of The Moon"
Pat Flannery wrote:
kT wrote: Figure it out : http://spaceflightnow.com/delta/d323/status.html 0014 GMT (7:14 p.m. EST Sat.) T+plus 73 minutes, 42 seconds. SPACECRAFT SEPARATION! He took this picture at 17:30 UT on Feb. 19th: http://spaceflightnow.com/delta/d323...htimeline.html T+66:45.1 - Third Stage Ignition - The Thiokol Star 48B solid-fueled third stage is ignited to deliver the THEMIS satellites into its intended orbit around Earth. http://spaceflightnow.com/delta/d323/070212track.html I can't explain the time anomaly here. Maybe UT means something else. http://en.wikipedia.org/wiki/Coordinated_Universal_Time Ah-ha! I though it looked like a solid! Liquids don't generate that much visible particulate matter. Check these out BTW: http://www.freqofnature.com/photos/mmiii/ Particularly this one, which is really cool: http://www.freqofnature.com/photos/mmiii/P9192066.jpg I think there must be some confusion because some of the shots I've seen do indeed look like the Themis upper stage firing. Hopefully some more dated photos will start filtering in over time. -- Get A Free Orbiter Space Flight Simulator : http://orbit.medphys.ucl.ac.uk/orbit.html |
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