There's an image (http://www.nasa.gov/images/content/141349main_06pd0094.jpg) on the Nasa web site of the New Horizons launch, showing 4 towers surrounding...

How dependent are various satellite systems like GPS and Iridium on ground based support? I understand that these systems, as different as they are, both...

So, much of the press coverage of the New Horizons probe is breathless about how the probe will "pass the Moon in 9 hours." Does the probe actually go...

At http://radio.weblogs.com/0101365/2003/11/12.html is shown the blueness of a test-tubeful of LOx, and its absorption spectrum. What about a light path of...

Hi, No flames plz, I'm not claiming to believe in any of the following, but was simply just seeking some enlightened answers. :) As you know, a couple of...

Recently there have been announcements about new and improved ion thrusters. One of them was the Helicon Double Layer Ion Thruster, and the latest one is the...

Ciao, for my thesis I need a little bit of information on Galileo Integrity, I searched google but with no good results, so where I can found an operational...

The Space Studies Institute will be hosting a track at the 2006 International Space Development Conference in LA, and would like to issue a call for papers to...

Zero gee entry seat, well better described as simulated zero gee. We simulate zero gees in a one gee environment currently using a swimming pool. This same...

How far out can we detect a Kuiper Belt Object? It seems that more objects are found as techniques improve, but we are up against the inverse square law both...

What is the age limit of traveling to space? The multi-millionair that went up in a russian rocket was in his 60's?

Hi, What is the best config for a space helmut? I've seen all kinds from google search. I like the sphere kind with a hemisphere front. The back of the head...

For a given amount of energy input, the absolute limit on the speed acheivable is set by dumping 100% of that energy into the kinetic energy of a spacecraft. ...

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...

Opportunity And Spirit approach their eighth Warranty reprise. http://antwrp.gsfc.nasa.gov/apod/ap060105.html Batteries not in; Parts settle during...

Just out, NASA TM-2005-214014, December 2005 "Materials Refining for Solar Array Production on the Moon" This report was originally a white paper on a process...

When watching the Russian Progress docking to the ISS I see this little thing spinning. When I see it from the Progress on board camera view it looks like it...

Do spin-stabilized satellites have attitude drift requiring periodic correction? If not, why? Even inertial navigation platforms have drift. If yes, how do...

One of the limiting things in Earth to orbit rockets is first stage initial thrust. The rocket engine of the first stage has to carry all the weight of the...

I was reading about the airship to orbit idea, and how it is probably impossible. This got me to thinking, are there any materials like carbon nanotubes that...