What components need to make up the lunar transport architecture? One thing I'm not too sure of is the difference between OSP and CEV. Is CEV just be an...

With all the extra complexities created by the 1.5 architecture, has NASA asked: What is the minimum LEO launch capability needed, for a crew of 4, plus "hand...

Just as an amusing thought for the engineers and sci-fi followers, the question of how to reach interstellar speeds comes back. The force of sunlight is about...

Assuming the first lunar bases are not built in lava tubes, there is a need to protect equipment from temperature extremes, and to protect equipment that's not...

Does anyone know how efficient this would be? I suppose the measure is (electrical energy supplied) / (orbital energy increase) For a rotating tether, the...

One of the drawbacks of SSP is the size of the Earth based rectenna. This isn't an engineering challenge, but near populated areas will be a planning...

Leaving aside the debates about Mars' desirability etc ........ Zubrin and McKay have proposed statite reflectors for heating...

According to New Scientist, researchers are working on silicon based rockets that fire out nano particles. These would typically be small carbon nanotubes or...

On 22 Apr, 23:33, Volker Hetzer wrote: Alex Terrell schrieb: How easy would it be to make a satellite stealth? ...

Assuming NASA gets to the moon with its proposed architecture, any suggestions for a programme of activities? The NASA architecture seems to be optimised for...

Hogwarts, Washington, 19 September 2005. Some thirty three years after the Apollo 17 returned from the moon, NASA have finally given the green light to Apollo...

If the US has decided that the moon is the right place to go, would an equatorial launch base make sense? How much would this improve the mass to Lunar...

I tried posting this to tech, but it wasn't (not yet) accepted, so I'll tries policy. What is the minumum delta V requirement for a ballistic trajectory from...

This article http://monolith.caltech.edu/Papers/ParkinLauncher.pdf talks about using microwaves to power a hydrogen fueled launch rocket (see discusion in...

The recent mass tragedies in Asia ask the question how safe will large cylinder colonies be? The destruction of one of these could also lead to the loss of...

No, that SHOULD be causing arab governments a lot of embarrasment

A couple of years ago I published a route map on how Near Earth Asteroids could be used to establish a profitable space based economy. Then along came...

The art work coming out of NASA and other sources seems to imply an Apollo approach, namely, land your capsule on the moon, explore, launch most of your...

NASA is proposing the stick to launch the CEV. This seems to have a capability of about 20-25 tons to LEO - about the same as an EELV Heavy. NASA is also...

Check out he http://www.google.com/jobs/lunar_job.html and http://www.google.com/virgle/index.html This is a great opportunity for lots of the posters...