Hello, I'm a member of a group building a CubeSat based Pico Satellite. I am attempting to find a standard GPS reciever, perhaps one with multiple antennas to...

I've recently read that a distant galaxy 11 billion light years away has been spotted. Does this mean that in actuality it was 11 billion light years away...

Has anyone read this article? In an exclusive story, Av Leak claims that Rutan has modified his spacecraft to improve its stability. Burt may still make Dec...

The following image of Saturn was taken by Hubble telescope. http://139.134.5.123/tiddler2/c22508/storm.jpg By a software it was sharpened...

Here you can watch various nebulae stereoscopically! http://139.134.5.123/tiddler2/stereographer/gallery/nebula/nebula.htm

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 It's getting a bit tiresome seeing one misguided American after another with their cutsie little yellow or...

I just finished reading Zubrin's "Entering Space", and was somewhat disturbed by his economic analysis of space solar power. Not that I found it off the mark...

I'd like to bounce a propulsion idea off the experts of this group: Visualize a very small, v-shaped notch in a thin layer of diamond - maybe 100nm wide and...

Now that bubble fusion appears to be panning out, as least as a neutron source, can anyone design a "bubble drive" to take direct advantage of it - beyond the...

Dear all, I have a question to the community: Is there a relation between data rates and downlink frequency of a satellite? Thanks for the help in...

Is the moderator dead? Yours, TDP m.l. m.s.l. p.f.p.p.

I've thought about what a reasonable, achievable, less expensive earth-to-orbit launch vehicle would look like. I keep coming back to a two-stage-to-orbit...

I wonder if you could reduce boneloss by trampolining in orbit? You would need a trampoline on the floor and one on the ceiling and do a half somersault...

hi, A pressure jet has venturis which use the energy in expanding propane to entrain air into a combustion chamber. a) What about using the expanding propane...

Would it make any sense to design a surf launched tourist vehicle which is spun up while floating in the water? This could then be a totally passive guidance...

I looked on the web curious about thrust augmentation concepts for jet engines and found a 1952? NACA report that detailed an experiment where water was...

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...

I skimmed a story about the recent outside repair mission on ISS. It mentioned that the spacewalkers were always ahead of schedule, it took 1 1/2 hours to go...

In article , Dumarest wrote: is it better to orient someone, travelling at...

Recent discussion of nitrous oxide as a cheap easy to use oxidizer, made me wonder what performance would be with a higher energy fuel like MAPP gas or...