The Sirius Satellite Radio (www.sirius.com) says: "our three state-of-the-art satellites that rotate in figure eight, geo-synchronous orbits around the...

Saw this on NEOs: http://www.spaceref.com/news/viewsr.html?pid=15720 Now I might be a bit stupid in my reading, but it sounded a lot like "how do we cope...

I have been thinking about the way the fire behaves in microgravity. I have found little information on this in the internet, so I am mostly just wondering,...

This is partly in answer to the Scientific American article about cosmic rays likely preventing human spaceflight. I have long believed that O'Neill colonies...

Firm offers hi-res satellite imagery of crime scenes The site http://www.iig-associates.com/imagery.html claims it can find you satellite license-plate...

I note from the BBC News site http://news.bbc.co.uk/1/hi/magazine/3429857.stm today that "moondust is composed of 40 per cent oxygen". Also that ""One of the...

This website... http://www.astronautix.com/stages/satkhead.htm ...mentions a "flat bulkhead" for a possible Saturn IC revision that "consists of multiple...

Until some nuclear-powered system of propulsion which does not involve mass ejection is invented, then Man is limited to making the occasional flea-hop into...

..........

I have limited math skills at the moment so I’ve yet to figure out all the particulars. Can anyone here tell me if something like this could work? Imagine a...

In order to produce the most effective orbiting facility with the least amount of materials and the least effort, it seems obvious that it should be an...

Is there a formula or rule-of-thumb for making a rough estimate of the rate of air loss in a space craft for a given size air leak? -...

I recently came across an intriguing photo of what appears to be a four-engined Titan first stage. http://www.bernd-leitenberger.de/titan34.html (scroll down...

Is anyone aware of ANY freeware packages to track and control satellites?

I read recently that researchers had developed a small device that reforms a water methanol mixture to supply a hydrogen fuel cell. Would it make any sense to...

After seeing the Armadillo crash, I thought to myself why didn't they just have a fuel guage and monitor it? Then I thought some more and realised that it...

I was reading this article http://www.newscientist.com/article.ns?id=dn6925 Would this type of approach for rocket fuel be superior to those which have high...

Does anyone have formulae or rules of thumb for the mass of a fuel tank to hold a certain weight or volume of fuel such as LH2, LOX, or Kerosene - eg if I said...

Is the RL60 a 'done deal' for some variants of the Delta 4 and Atlas 5? If so what effects will it have on payloads - presumably to GTO but also on...

....Proof positive that some college students have way too much time on their hands: http://www.physics.uq.edu.au/lp/lasdiag/enterp.shtml OM -- "No *******...