1. How are they going to recover the upper stage? 2. The F9-S9 appears to have 3 identical lower stages strapped together. Do they all burn out...

According to SpaceX's press release of 8 September (website: spacex.com), both stages of its forthcoming Falcon 5 and and Falcon 9 launch vehicles will be...

I'll try asking this again. I cannot find the reasons why the two Lunokhod rovers "died". I assume it had to do with battery charging after the long lunar...

I'm wondering if anyone has read the latest...

John Carmack is experimenting with a throatless type of rocket: http://www.armadilloaerospace.com/n.x/Armadillo/Home/News?news_id=308 His comments mention...

In another thread suggested that the RS-68 might make a better engine for a shuttle derived vehicles this prompted me to go to "Encyclopedia...

Has anyone ever designed/built a hybrid jet-rocket (not a scram jet, but hey if it scrams too then thats neat :) I was thinking something along the lines of...

Shaped charges using normal explosive via explosions perpendicular not behind path of travel "fingers on watermellon seed" squirt a molten bunch of formerly...

Would there be any advantage to using the Mars style airbag descent on the moon? Get down near the surface via rocket, slow the descent, fire airbags and then...

The Lunokhod rovers covered a lot of lunar terrain but both eventually stopped working. Specifically, what was it that stopped them working? Did their...

Some posts which were stuck in various parts of the approval and posting process for sci.space.tech and .science have now been manually freed up and will be...

Here's some news that recently came out: http://www.newscientist.com/ar ticle.ns?id=dn7867 http://abc.net.au/science/news /stories/s1439827.htm Apparently,...

Armadillo is still working well on sending a man into suborbital space! http://www.armadilloaerospace.com/n.x/Armadillo/Home/News?news_id=308 is the address...

Is gravity so strong that a meteor swinging by the earth, moon or planet at 25,000 miles per hour on a tangent trajectory is pulled in for a direct impact?...

Is there any video available from the cockpit of the Space Shuttle (or anything else, for that matter) during liftoff and reentry? I'd be interested in seeing...

wrote: Does anybody know of any other cases in which engines either were or were not audible in the cockpit? I've heard RCS thruster...

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

Here's an article that says scientists have used nanotubes to improve on gecko-like...

I've just finished Steve Squyres' _Roving Mars_, and can't recommend it highly enough. It really gets across the nuts and bolts -- and the emotional...

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...