I am planning three reusable two stage launchers capable of placing 20 tons each into LEO are built to support the deployment of a wireless global braodband...

Space sensing, long distance communications over interplanetary and interstellar distances, and large scale use of solar energy across the solar system and...

Testing

Space travel technology has already given us an extension of our writ on this world, and saved us from premature destruction. We will survive only as long as...

I was thinking what a mind-bending thing Sputnik was back in the day. All the space cadets of the 1950s eagerly watching Flash Gordon and reading McCall's...

On Aug 3, 8:54*pm, BradGuth wrote: On Aug 2, 12:42 pm, wrote: On August 3, 1977 Senator Ted...

S1 Imagine a 38 foot tall cone with a 22 ft wide base. Hydrogen oxygen powered, with a zero height aerospike engine, built in heat sheild at the base. ...

I asked a question about using molecular sieves, solar power and thin films to survive on Mars by compressing oxygen 27,000x and compressing nitrogen and water...

Here are the 50 Near Earth Asteroids that are easiest to get to. Total delta vee ranges from 3.82 km/sec to 4.505 km/sec. This is nearly half the delta vee...

Despite my disagreements with you on the level of factual reality, I do agree with you on one level. Our commercial society as its currently constituted is...

I was just reading a declassified document this week-end about Nuclear Pulsed Space Propulsion Systems...

Consider the following subscale airframe looking a lot like the Concorde having these dimensions and capacities; Length 42.65 ft Wingspan 17.71 ft Height ...

In 1996 I wrote in these newsgroups about an idea I had worked out about using thin film reflectors inflated on orbit to concentrate sunlight onto a solar...

More information on this hypthetical moonship. http://en.wikipedia.org/wiki/Gas_core_reactor_rocket A gas core nuclear rocket sustainer with chemical rocket...

More information on this hypthetical moonship. http://en.wikipedia.org/wiki/Gas_core_reactor_rocket A gas core nuclear rocket sustainer with chemical rocket...

I had the great opportunity to meet Bob Forward back in the 1980s when I attended the 25th anniversary of Project Ozma. I was a graduate student working at...

http://en.wikipedia.org/wiki/Cloud_nine_%28Tensegrity_sphere%29 http://www.flickr.com/photos/ldjjj/109033997/ Two kilometer diameter geodesic spheres floating...

Recently I have posted some ideas related to mining the asteroid belt from Earth. Basically, we proceed as follows; (1) build a reusable multi-stage heavy...

I see that a new X-prize was announced. http://www.personalspaceflight.info/2007/09/13/next-x-prize-will-be-a-real-lunar-lander-challenge/ Build a lunar...

I posted last September that water vapor and oxygen in the Mars atmosphere was such that you could support a person's water and oxygen consumption with a...