12
If Aluminum was non-reactive, could there have been an "Aluminum Age" instead of a Bronze Age?
worldbuilding.stackexchange.com
12
Parachute equivalent when there is no ground
worldbuilding.stackexchange.com
11
How would a primitive people recharge energy weapons in a hard science fiction setting?
worldbuilding.stackexchange.com
11
A laser-propelled starship loses its decelerating beam; what options do they have to slow down?
worldbuilding.stackexchange.com
11
How did astronomers get rid of microwave radiation from stars and galaxies in picures of the CMB?
astronomy.stackexchange.com
11
How would an element behave that's a plasma at room temperature?
worldbuilding.stackexchange.com
11
Why was the Saturn V several times as expensive as falcon heavy despite only having twice its payload?
space.stackexchange.com
11
How can we source potassium fluoride outside of Earth?
space.stackexchange.com
11
Thorium in space
space.stackexchange.com
11
Rocket fuel cost to launch 1 kg to orbit
space.stackexchange.com
11
Gravel on Curiosity Rover?
space.stackexchange.com
11
Why is specific impulse equivalent to effective exhaust velocity?
space.stackexchange.com
10
Can You Make A Tiny Nuclear Reactor By Employing Supercritical Conditions For Brief Periods Of Time?
worldbuilding.stackexchange.com
10
Conversion of heat into electricity in rocket nozzles
space.stackexchange.com
10
Why doesn’t SpaceX sell Raptor engines commercially?
space.stackexchange.com
10
Why did Curiosity perform TCMs?
space.stackexchange.com
10
Thermal Superconductors vs Pulse Lasers
worldbuilding.stackexchange.com
10
Will mining water on Bennu for travelling to Mars not be more economical than mining it at the lunar south pole?
space.stackexchange.com
9
Is carbon-223 theoretically possible?
worldbuilding.stackexchange.com
9
How much delta-v does it take to go from one arbitrary orbit to another?
space.stackexchange.com
9
What is the white stuff emerging from a hole on the surface of Mars?
space.stackexchange.com
9
Is there some fundamental limitation that would prevent steam-powered rockets from reaching space?
space.stackexchange.com
9
How does “space weather” cause reaction wheel failure?
space.stackexchange.com
9
Why can't we point the centre of the universe from inflation graph we see?
astronomy.stackexchange.com
9
Would Starship be able to lift mass to orbit (both low and geo-stationary) cheaper than "any" space elevator?
space.stackexchange.com
9
Could a super-advanced but sociopathic alien civilization "blind-hack" Earth, even if it had never even heard of humans?
worldbuilding.stackexchange.com
9
How best to arrange a network of light-focusing satellites closely orbiting the sun
worldbuilding.stackexchange.com
9
How does a robot keep its own joints clean?
worldbuilding.stackexchange.com
8
With infinite propellant, would a solid offer more thrust than say a liquid or gas?
worldbuilding.stackexchange.com
8
How to build a world with magnetic levitation?
worldbuilding.stackexchange.com
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