I read a mention some time back about a (canceled) project that would have attached a long duration habitation module to the ISS. I can't remember if I read...

This post is adjunct to the "Moon City?" post, but specialized. There seems to a problem with human frame degradation in 0 and low g, (1/6 g) enviroments. I...

I was told that if you venture into space without a suit, you will essentially explode due to lack of pressure. Out of curiosity, is this true? Thank you.

I've sent this once already, but it hasn't shown up. Sorry if it duplicates. We were discussing "Space Cadets" in work today, and someone asked if...

The scientist who recently announced that they may have created an extremely short-lived black hole in the lab got me thinking; is the following a plausible...

Afternoon all. The current foremost contender for the X-Prize is, of course, Scaled Composites - expected to formally announce soon, I believe - which uses a...

How much energy can mirros focus onto a solar panel before it begins to melt? It's an SSPS based question. Could large light-weight mirrors and small solar...

The ultimate in solar collectors must be the deposition of solar collectors onto the solar surface. The sun puts out 3.86x10^26 watts of power. Distributed...

Using existing technology if we were to build a Fission rocket then how much more efficient would than a Chemical rocket would it be? I believe conventional...

Is there any known or guessed quantity of He3 on asteroids or dead comets? If an object has been orbitting for 4+ billion years, it should have collected some...

When a stuntman jumps off of a build, he lands on a large airbag. The idea of having a reusable capsule land on a huge airbag seems interesting. If the...

In several experiments conducted by NASA and by the Russians plants were grown indoors using an artificial light. What type of light was used that produces...

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...

This is a thought experiment only. Please, dont shoot on sight. Here are components of a traditional expendable liquid rocket from ground to top: An...

What components need to make up the lunar transport architecture? One thing I'm not too sure of is the difference between OSP and CEV. Is CEV just be an...

I need help in calculating the gravitational drift at L1, 30,000+ km above lunar near side. I'm curious how much stationkeeping fuel, per period of time, a...

Looking only at the vacuum specific impulse of plain hydrogen-oxygen rockets, is it possible to advance their specific impulse to 500, or even 520? For...

In article , Josh Gigantino wrote: While building out a TransHab-type inflatable station...

of the safety pussies! I'm not one of you star gazing nuts :-) but I do realize the Hubble is the MOST important piece of equipment that the ...

http://www.popsci.com/popsci/aviation/article/0,12543,473272-1,00.html Is pulse detonation applicable for rocket technology? Considering "loud" isn't really...