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TheMatrix Equation-balance
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7 votes
2 answers
912 views

Is it ever normal to vent LOX from spacecraft with active engines? Isn't it a fire hazard?

-4 votes
2 answers
358 views

Why SpaceX decided to forgo the opportunity of a mock soft-landing (on water) for Super Heavy?

0 votes
1 answer
524 views

What would be the least expensive technological solution (considering all costs) to put on Lagrange Point 1 to affect global warming?

5 votes
1 answer
296 views

Deep Space Optical Communications (DSOC) - from what distance could a flashlight be detected by a space-based telescope

1 vote
2 answers
401 views

Given the current state of technology, what would make bullet-sized interplanetary spacecraft technically impossible?

1 vote
1 answer
143 views

How do "halo orbits" save on propellent (delta-v)?

-4 votes
1 answer
156 views

Why "The Gateway" could not use Circumlunar trajectory? [duplicate]

-2 votes
3 answers
306 views

Can Solid Rockets (Aluminum-Ice) have an advantage when designing light space-tug for LEO?

2 votes
2 answers
476 views

How are Falcon 9 Grid Fins' rapid movements calculated and controlled?

-2 votes
1 answer
244 views

What is the value of SpaceX Starship 1200-ton propellant capacity? Would a fully refueled Starship be able to accelerate to Jupiter (for example)? [duplicate]

4 votes
3 answers
1k views

A Philae Lander (like) anchoring harpoons on M-Type (metallic) asteroid. Can a nail gun and the effect of Cold Welding be a working solution?

3 votes
1 answer
1k views

How to maintain balance and center of gravity when pushing a 100-ton piece of asteroid?

0 votes
1 answer
117 views

Does an inflatable heat shield have some capacity to be used for LEO Earth's atmospheric entry?

0 votes
1 answer
145 views

What would be the most fuel-efficient propulsion solution to accelerate a 100-ton piece of NEO asteroid towards Earth?

2 votes
1 answer
296 views

How were inflatable fuel tanks for NASA supposed to work?

8 votes
2 answers
2k views

Lunar nuclear power system - how can hydrogen generated on the Moon be liquefied?

3 votes
2 answers
2k views

How to account for burned fuel mass when calculating spacecraft acceleration?