Title of the report: "Assessment of Options for Extending the Life of the Hubble Space Telescope: Final Report (2005)" URL:...

For an update on one version of the plan to explore Europa, check out the article at http://news.bbc.co.uk/2/hi/science/nature/3548139.stm More details,...

Has anyone tested the idea, for an SSTO, of running the engines at a low level at re-entry, thus using the engine exhaust as a heat-shield? As a related...

hello, world\n the behavior of exhaust gases is remarkably different at atmospheric pressures and at lower pressures or vacuum. One example where this becomes...

What happens to upper stage exhaust plume products after, for example, a geosynchronous transfer orbit burn from an initial parking orbit? Do the products of...

I posted some ideas on lunarpedia about Existing Commercial Potential for Helium-3 from Luna. The Moon is an abundant source of He3. He3 has a market value,...

Are any back-up rovers available (US, UK, whatever) that might be tweaked slightly (ex; made teleoperable) and sent to the Moon to, say, explore possible lava...

Nuclear fission converts about 1 part in 200 of the nucleon rest mass to energy. Nuclear fusion converts about 1 part in 20 of the nucleon rest mass...

In an an article in space.com, Harrison Schmitt said, "potentially substantial amounts of solar wind hydrogen are present everywhere on the Moon along with...

I keep reading that there designs being made for rovers being sent to Europa. Why do you need to have an ice melting lander? Couldn't you impact a large...

Hello I am searching for all kind of informations about explosive limits of mixtures , like mixture of oxygene with other gases. For example, what are the...

Fairly short notice from SpaceX, as usual: http://spaceflightnow.com/falcon/005/status.html Pat

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...

A new video has emerged that shows a flight at the MacGregor TX test site of a Falcon9R with steerable fins at both top and bottom ends of the rocket. The...

Reading lists and recommended references are a recurrent theme in sci.space.* This occurs so often that it seems like there is a FAQ missing here. This...

References: Whoo hoo, another update, based on part of the feedback (don't worry, I'm not ignoring HGH's...

Conventional wisdom is that fission can't produce fast interstellar velocities, except by powering a propulsion beam. Here, I show how bombtrack propulsion can...

Pretend a hypothetical SSTO tops off its tanks in low Earth orbit. It now has plenty of fuel to get from LEO to the lunar surface. In fact, it has 4000m/s of...

http://splitreflection.com/cal/shuttle.png A simple shuttle orbiter concept I've drawn up based on certain princibles. - This would be an upper stage, though...

Read this one: http://www.physorg.com/news10789.html So is Felber's anti-gravity concept testable? They mention trying to test it in magnetic storage rings...