Can anyone recommend a good textbook or reference on spacecraft telemetry and commanding? I've looked at the CCSDS handbooks but found them a little terse and...

Let's assume a new program for lunar missions is started. Let's also assume it is posited as Bush had did it, saying we are going to the Moon, and should go to...

I was looking at the original TDRSS ground station (32.502 N, 106.611 W) in Google Earth historical imagery and noticed that a substantial addition was made to...

I don't know if this is the right group to post this question to, but I'll give it a try. Is there any way of knowing which two TDRS satellites are being used...

Assuming we eventually wish to mine asteroids for useful materials, we would need to first do some prospecting. What is the best/most economical method? I...

The DARPA solicitation for the new FALCON small launch vehicle program specifies the requirement to put a satellite in "sun synchronous orbit" at 450 km at "79...

The common explanation for satellite 'precession' relies on planetary spherical deviation - " The uniformity of sun angle is achieved by tuning natural...

I'm interested in developing a sun sensor (or maybe a horizon sensor) for a low-cost, amateur, high altitude project. However, I'm having some difficulty...

There's a cute illustration of the tendency for optical spysats to have orbits optimized for, among other things, sun angle and time of day at...

Suitsat was widely predicted at the time to have lasted about 6 weeks before decaying. It lasted more than 6 months. Is this due to uncertainty of the...

I need something that’s completely automated and can extract 100 tonnes of water per day from steam (does 100 tonnes of steam = 100 tonnes of water?). This...

I read that the Kassam rockets are fueled by a combination of sugar and fertilizer. Anyone know how good a fuel it is? ISP numbers? How does it compare to...

Would be used for Mars to expand latitudes where landings can be made: http://spaceflightnow.com/news/n0908/17wallops/ Pat

Well, not having received any negative responses to my original query in sci.space.policy, concerning Virgin Galactic, here...

Is is possible to make it into earth orbit using a sub-G thrusting rocket motor together with a hypersonic lifting body? Assuming it is possible Newtonically,...

Does Hubble perform observations while in direct sunlight (ie the period of its orbit when it is not in the Earth's shadow. If not, then a propulsion system...

Students of the Cal State Long Beach Aerospace Engineering Department, teamed with Garvey Spacecraft, succeeded this past Saturday in launching a rocket for...

hello there. i am writing a paper on the space tourism trend, and would like to trade email with some scholars and/or those interested in traveling into...

NASA Vessels up on 5711 kHz USB ------------------------------- It is Sunday 10:09am EDT (1409z). The NASA SRB recovery vessels "Liberty Star" and "Freedom...

Heads up - STS-121 problems --------------------------- It is Monday, 12:24pm EDT (1624z). The S-121 Management Team is about to begin a briefing that will...