My father (Henry Cate) and I have come up with an initial tether project that might be fun, affordable, and profitable. The idea is to use a rotating tether...

How massive a package can be placed into lunar orbit with which existing launcher?

I read recently that researchers had developed a small device that reforms a water methanol mixture to supply a hydrogen fuel cell. Would it make any sense to...

First, I am a VTVL fan first but that does not mean you should not think of other possible solutions. While thinking about the problem of the weight of...

I just read an article with the title: "Nasa is sabotating true colors of mars" Most articles starting with Nasa&sabotating are mostly not very good pieces;...

Let's assume that SPS is beaming down microwaves at 900 W/m^2 intensity in a column of focused energy 10 km in diameter at a frequency of 2.45 GHz. The...

Thinking about the problem some more it seems a big problem would be landing a high speed glider onto a sled that is on tracks. This would mean that the sled...

It's been reported in many places that the MER teams are operating on "Mars time"..i.e., days that are ~24 hrs. and 39 minutes long. Does anyone know the...

A week or so ago I saw a rather neat Junkyard Wars episode on pulse-jets. I'm also rather intrigued that it was felt to be a safe enough gadget to build for...

It's often suggested that a catapult on the moon could fire material from the surface to L1. From there it would be sorted and grouped, and then sent off in...

As pertains to the heat shield and parachute should they be increased or decreased as relates to Mars.the Moon, and Earth? -----= Posted via...

Having problems downloading http://marsrovers.jpl.nasa.gov/gallery/press/spirit/20040113a/Horizon_hills_ color-A11R1.jpg Shows it downloads but just blank...

What does the combustion chamber actually do? It's a place for the propellants to mix and burn subsonicly. The mixing typically requires ferocious...

Bar the development of some revolutionary technology, is it realistic to think that we can land on Mars and come back? Say we want to bring a piece of Martian...

I see there's a new stereo anaglyph at the MER web site. Wouldn't it be nice if they were able to publish the stereo images on a Viewmaster (tm) reel and...

You can run but you can't hide. They are everywhere. Giant slug marks. What could cause them? Dark contrail like features everywhere. Scientist...

Funny thing is that Werner Von Brown was the one who proposed this ion engine more than 50 years ago. What was it with these Germans -- Einstein and Von Brown....

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...

Please give me any reference to an article or a book that contain Literature review of current Remote Sensing issues in the last few years

I just started a new news group for space tethers on Yahoo. You can access it over the web or get it as email. To join go...