Research baloons have flown at 51km above sea level, and yet the sputnik 1 flew at 31km. 20 km below where the highest baloon can fly would yield enough...

What's the situation with Spirit (Mars rover) now please? Is it back to full functionality or is it stationary and just sending pictures back? E.F.

Suppose there was a "hypervelocity squirt gun" that could inject fuel into a scramjet at the same speed that the air was rushing by. This would mean no...

If something physical or meta-physical happened whereby the Moon's orbit was suddenly changed to an apogy of just within Earth's gravitational pull (sorry,...

I have a theory, that if a magnetic field dissipates at a rate of x m/s, then having a second magnetic field to replenish it at ½ x/s, then the magnetic field...

Hello! I've read in few articles dealing with the priorities change in NASA that HST will be let to naturally die as a result of Shuttle service missions...

It seems intuitive that, if the technology for SSTO is not quite here yet, it should be possible to do the job by building an RLV which is almost capable...

"Dr. O" wrote in : I'm personally not a fan of antimatter propulsion at this...

of the safety pussies! I'm not one of you star gazing nuts :-) but I do realize the Hubble is the MOST important piece of equipment that the ...

I note from the BBC News site http://news.bbc.co.uk/1/hi/magazine/3429857.stm today that "moondust is composed of 40 per cent oxygen". Also that ""One of the...

I keep reading that there designs being made for rovers being sent to Europa. Why do you need to have an ice melting lander? Couldn't you impact a large...

I have a question that may have an obvious answer but I have lost too many brain cells for it to be obvious to me. isp is given as the thrust...

Anyone know the delta-V to move Hubble to 51.6 degrees (while keeping it near 600 km altitude). What would be the amount of required propellant, assuming a...

Would it make any sense to design a surf launched tourist vehicle which is spun up while floating in the water? This could then be a totally passive guidance...

EUROPEAN SPACE OPERATIONS CENTRE (ESOC) ------------------------------------------------------------------- Darmstadt in the Federal Republic of...

maybe I or someone else mentioned this alrady. how about putting a maneuvering thruster or at least its outlet (i.e., run a tube out to carry the thrust...

TransOrbital applied to the State(?) Dept. for their license to land a mission on the lunar surface. Realizing that a mission is held up until such a license...

This is the weekly Frequently Asked Question (FAQ) posting for sci.space.tech and sci.space.science . It is crossposted into sci.space.policy to explain...

Hello All: Who has the most powerfull rocket engine? In terms of Lifting capability? --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus...

I am wondering if a rocket engine's performance in the atmosphere could be improved by changing the operating point, such as mixture ratio or chamber...