Whenever settlement of the outer solar system is discussed in this ng, it's always assumed that it will be done using fusion power to provide energy, with an...

In looking at all the problems that terraforming Mars would involve, as well as the time scales until it could actually be inhabited are, I think another...

Here is my latest proposal on how to get to space cheaply. It consists of three stages, the first of which is a "platform" powered by a CH4- LOX rocket; the...

Please see the diagram he http://gaia.ecs.csus.edu/~schlangw/kite.jpg Now here is my question. I know it won't work, I just want to know WHY it won't...

Imagine a rocket booster consisting of three expendable stages. Stage 1 - 67% RP-1 & LOX propellant (275 s specific impulse) Stage 2 - 67% LH2 & LOX propellant...

Uranium 239 has a half life of just over 20 minutes. It is routinely created with existing technology, but it has never to my knowledge been separated out...

If all you want to do is put 1 kg in low lunar orbit, it can be done with a rocket with mass no bigger than 391 kg! Here are my calculations (I used the...

My thoughts tonight http://phoenix.lpl.arizona.edu/ Before this week we were uncertain about life in the universe. After this week, we will know of a...

http://en.wikipedia.org/wiki/Nuclear_pulse_propulsion Atom bombs involve critical masses of fissile materials. This means assembly of fissionable materials...

Alright, I have seen discussions in this newgroup of warp drives anti-gravity and all manner of physical processes that can only be described as bizarre! And...

In the 1950s and 60s the J2 engine was used as an upper stage on the Saturn rockets. When used at lower altitudes efficiencies suffered due to atmospheric...

Moonlab - then what? Skylab was an SIVB outfitted with upgrades inside the propellant tanks. The propellant tanks themselves were used during the launch and...

This is not a reasonable question, in fact, haha, its not even a rational response to the conversation we were having. Just goes to show, pearls before swine...

Replace each EAP solid booster with an uprated cryogenic booster EPC+ This puts 72.5 metric tons into LEO and 39.5 metric tons GTO - with return and recovery...

Here is the data on Mars' atmosphere; http://en.wikipedia.org/wiki/Atmosphere_of_Mars Here is the data on Earth's...

Okay, first - the theme song http://www.youtube.com/watch?v=AAeYTC_uY54 Now, Imagine a 3 m diameter shell that has a surface gravity of 1,000 gees. g =...

Space colonies have been seriously proposed as far back as the 1970s by engineers and scientists like Gerard...

I have posted elsewhere my plans to create 50 billion channels using several hundred satellites in a world wide constellation to create a global wireless...

Imagine a hydrogen oxygen rocket engine with an exit nozzle diameter of 17 meters in diameter, 36 meters long and produces a thrust of 53,300 tonnes with a...

The 4 million solar mass - supermassive black hole at the center of our galaxy, spins at 37% the speed of light, and is 30,000 light years away. It is...