Skip to main content

Questions tagged [feasibility]

Used when the question pertains to how practical something is. It will also include an economic review of the what is being considered. It may be possible for something to be technically possible but the cost might be prohibitive.

Filter by
Sorted by
Tagged with
46 votes
3 answers
30k views

Would it have been possible to have sent the Space Shuttle around the Moon?

I'm curious about whether or not the Space Shuttle could have been used as a lunar orbit vehicle - basically, would have it been technically capable of getting to the Moon, entering orbit, then ...
user avatar
27 votes
8 answers
21k views

Why aren't linear aerospike engines in common use?

Linear aerospike engines are an old idea that seem so full of promise. Why are they not widely used today by the likes of Boeing, SpaceX, etc.?
Travis Bear's user avatar
13 votes
2 answers
4k views

How feasible would it be to move the ISS to the surface of the Moon to recycle its components in future?

I see it as an awful waste of energy in not only creating the International Space Station (ISS) components, but also in getting them into space to only decommission the station by letting it fall back ...
user35276's user avatar
  • 147
13 votes
4 answers
2k views

How would manned interstellar travel become feasible? [closed]

What is the actual feasibility of interstellar travel? For instance, a manned journey to Proxima Centauri, given the distance, what technology would need to be developed/perfected for such a journey?...
user avatar
23 votes
3 answers
3k views

Can a single Soyuz return a crew of six back to Earth?

Let's say that the ISS has to be immediately evacuated and that one of the two Soyuz is broken. Could the crew quickly remove "unnecessary weight" (seats maybe?) and fit six person to return back to ...
pastullo's user avatar
  • 1,216
14 votes
3 answers
5k views

Repurposing a nuclear submarine for space travel

Although a nuclear submarine might not make a great spacecraft, would it be possible to repurpose it for space travel? Benchmark: USS Illinois (SSN-786), Virginia-class submarine (born in Virginia, ...
JSCoder says Reinstate Monica's user avatar
9 votes
4 answers
10k views

Are magnetic boots in space practical?

I can't count how many science fictions stories I have read where someone is strapping on magnetic boots to walk in or on a space ship without gravity. How realistic of a solution is this? Just for ...
James Jenkins's user avatar
7 votes
3 answers
756 views

Why not land booster stages in a cone or net?

Why must you land the boosters on a flat surface? Why not aim for a cone a deep net that can accommodate rough seas, winds, etc? A picture is below - obviously I am not an artist nor an engineer.
phil's user avatar
  • 71
3 votes
2 answers
4k views

Could magnetic "boots" be used to simulate the effects of gravity for asteroid ships?

I have been to the Wikipedia pages on alternatives to gravity, and found the usual alternative forces, with the potential for magnets and the specious Russian claims, but I'm wondering why not just ...
Private Name's user avatar
1 vote
3 answers
1k views

Could a powerful enough laser or maser heat the core of Mars?

I think that if we could build a powerful enough laser/maser to heat the core of Mars up and melt it, it could generate a magnetic field, which would allow for easier living on Mars. Could this be ...
ed edge's user avatar
  • 29
20 votes
4 answers
2k views

Any possible setbacks in deorbiting larger space junk and let it burn up upon reentry into atmosphere?

Space junk, orbital debris, or space waste pose a risk on functional satellites and space laboratories / stations in orbit around Earth. According to Wikipedia: Currently about 19,000 pieces of ...
TildalWave's user avatar
8 votes
1 answer
459 views

Could oxygen be used in a resistojet in a vacuum environment?

Resistojets heat a compressed gas or vaporize a liquid to expand it through a nozzle for thrust. They improve a bit on the performance of cold gas thrusters. This experimental water resistojet managed ...
kim holder's user avatar
  • 21.4k
4 votes
1 answer
409 views

How often can liquid hydrogen engines be restarted?

A proposal for lunar development, LunarCOTS, relies on a reusable shuttle running on LH2 and LOX to work. It lands, is refueled on the lunar surface, and then takes off again. Presumably it could sit ...
kim holder's user avatar
  • 21.4k
17 votes
2 answers
2k views

How do we make a round-trip journey to Mars?

I've been to Kennedy Space Center in Florida, where I saw the huge Saturn V rocket... This was used to get to people to the moon. It had a Lunar Module to propel itself on and off the moon's surface ...
shortstheory's user avatar
13 votes
2 answers
816 views

What existing life on Earth is best suited for the Martian environment?

What existing life on Earth is best suited for the Martian environment? By best suited, I mean it could theoretically be placed on Mars and easily adapt or thrive within the existing environment the ...
user2389345436357's user avatar
9 votes
4 answers
2k views

Could the ISS be propelled to Mars?

As the ISS has shown the ability for human habitation for extended periods, might we be able to add a propulsion unit to the ISS that would be capable of providing delta-v to send ISS to a martian ...
tckosvic's user avatar
  • 2,302
7 votes
4 answers
1k views

Will any Indian in the final crew of the Mars One missions be in violation of Section 309 of the Indian Penal Code?

Last year the Mars One Foundation invited volunteers for a one-way trip to take up residence with the War-Lord. Over 200,000 humans volunteered; amongst them close to 20,000 Indians. A fraction of ...
Everyone's user avatar
  • 13.6k
7 votes
1 answer
316 views

Have Magnetorquers been used anywhere outside of the Earth?

On Earth, small satellites often include Magnetorquers. A magnetorquer allows the satellite to re-orient itself without using fuel in a way more permanent than magnets. While not every planet has a ...
PearsonArtPhoto's user avatar
  • 121k
5 votes
1 answer
366 views

Could a sling launcher be used on Mars?

A sling launcher (discussed in this write-up by Landis) is a tower with a motor that spins a hub with two or more cables attached. Payload(s) are attached to the end of one or more cables and ...
kim holder's user avatar
  • 21.4k
4 votes
1 answer
227 views

Semi-feasible alternates to silicon electronics for a Von Neumann Probe?

Disclaimer: this is a modified cross-post of my post on the Worldbuilding SE site, adapted to better fit the Space Exploration community. Some background A Von Neumann Probe (VNP) is a sci-fi probe ...
Drake P's user avatar
  • 429
4 votes
1 answer
223 views

Stabilization of Lagrange point asteroids

There are a couple discovered asteroids that orbit around L4 or L5 Sun-Earth Lagrange points https://en.wikipedia.org/wiki/(419624)_2010_SO16 https://en.wikipedia.org/wiki/2010_TK7 From what I read ...
Leonardo Ciferri's user avatar
3 votes
1 answer
333 views

What barriers are there to creating a reusable rocket sled lanchpad? [duplicate]

The ideal rocket sled launch is building a track that accelerates a rocket (via linear motors or something like that) up the side of a tall mountain. Not only could this save huge amounts of fuel, but ...
B T's user avatar
  • 218
2 votes
2 answers
245 views

Is it possible to make an Internet of Things device that works locally on Mars?

I know this is a weird question. I can't find a radiation hardened microcontroller (μC) that does Bluetooth Low Energy or even WiFi. Is there any reason this would not work on Mars, if a radiation ...
Bill's user avatar
  • 121