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117 Questions

Who coined the phrase 'Rapid Unscheduled Disassembly'?

How do we know the Apollo Moon landings are real?

Could liquid airlocks work?

Suppose Zuma wasn't “lost” — what would it take to detect it?

Why does SpaceX have a launch window for a pad abort test?

How fast could a person run on the Moon?

How does the Saturn V Dynamic Test Stand work?

Can ion thrusters be scaled up?

What would a lunar eclipse look like from the surface of the moon?

How hard is it on the crew to go through the 14+ g's of a launchpad abort of the Soyuz, or the Falcon system?

Why is NASA planning to deorbit the ISS instead of reusing its newer modules, like the Russians will?

What are the challenges of turning a rocket stage around and firing its engines into a supersonic wind?

How feasible is it to use aluminum and liquid oxygen as future propellant sourced from the moon?

How many astronauts have had spiritual experiences while in space?

Why is the Russian approach to the aerodynamics of their rockets different?

How weak can a propellant be and still get a rocket to space, theoretically?

What NASA documents did SpaceX use to design their engines?

Does having only 3 people on the ISS create workload problems?

What does it mean for a launcher to be 'nuclear-certified'?

How does the launch risk for a plutonium RTG and a uranium fission reactor compare?

How many photographs are there of the whole Earth?

What about gathering water ice from Saturn's rings?

Why is private spaceflight suddenly expanding so quickly?

How does an astronaut pack for the ISS?

Is radiation dose from cosmic rays higher behind 50 cm of shielding, or lower?

If we could send an orbiter to the Pluto-Charon system, could we put it in a stable orbit?

If an unknown ship entered Earth orbit, would it be detected?

What happens to the Soyuz boosters that land in the Kazakhstan desert?

How much fuel can SpaceX save by landing the Falcon 9 booster on a barge?

How much mass could the Saturn V rockets have landed on the Moon if nothing was coming back?