choeger
  • Member for 6 years, 5 months
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Mining of Uranus or Neptune
11 votes

That sounds like a terrible idea. The article says that: Lastly, Both planets contain high concentrations of methane. Like graphite, it too can actually transform into various forms of complex ...

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How much gravity is actually needed to avoid serious health consequences?
8 votes

We do not know yet. The main issue is a lack of empirical data. There are only four specially trained volunteers with more than one year exposure to microgravity. We'd need hundreds of volunteers ...

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What payload was expected for the 2018 Mars Dragon flight ("Red Dragon")
6 votes

The article you linked makes it pretty clear that the goal is to test powered landing of Dragon spacecraft. Hence, I expect little to no payload at all. Of course there might be some token experiment, ...

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How much modification would Dragon 2 or Red Dragon require to serve as a lunar lander?
4 votes

tl;dr: If you use (nearly) all your cargo capacity for additional propellant and get rid of heatshield etc. you might barely be able to land the Dragon II from Lunar orbit (back-of-the-envelope result)...

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What happens to a spacecraft crashing into the Moon?
4 votes

Why do you want to get rid of your engine in the first place? A trip to the moon would hardly use all the nuclear fuel you got on board. Of course it depends on the intensity of your burns, but ...

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Mining construction materials and other resources on Mars
3 votes

You can make a kind of concrete from sulphur, although the idea of living in buildings made of a potentially poisonous material might not sound very attractive. There is also water which should ...

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Sending the second stage into a parking orbit
3 votes

That does not make much sense, unfortunately: Most payloads are launched into a Geostationary Transfer Orbit. Such an orbit is highly elliptic. If the second stage could reach the Geostationary Orbit, ...

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Why can't spacecraft slow down before entering Earth's atmosphere?
3 votes

Because propellant is extremely costly in orbit (as of now). As long as you have to bring up every gram from earths gravity well, you want your tanks to be as empty as possible before re-entry. ...

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What is a good alternative to toilet paper for space travel?
2 votes

Duplicate of this question. You would have to adapt a Bidet to space. See also: This question

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Recent advances in anti-matter generation
Accepted answer
2 votes

There are proposed thermal antimatter rocket designs which could work with positrons. I am focusing on these to answer your questions (in reverse order): The amount of energy generated is (more or ...

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Is a spherical rocket design a plausible replacement for current designs today?
2 votes

With current technology, spherical spacecraft are non-practical for two reasons: Heat dissipation. A true (in your sense) spacecraft, AKA a Dropship would have to dssipate loads of heat into space in ...

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What exoplanet atmospheres might support life beside our nitrogen and oxygen atmosphere?
2 votes

That depends on your definition of life. If you include any self-replicating automata, you probably do not need an atmosphere at all. So the question should rather be: Which atmospheres do not ...

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Would an orbital scaffold or shipyard be useful?
1 votes

There are several proposed spaceship designs (or rather elements of spaceship design) that require quite large distances: A Shadow shield works best far, far away from the crew module Spin gravity ...

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After Mars, what's the next likely location to be permanently settled by humans in space?
0 votes

I would put my bet on one of Saturns moons, because The saturnian radiation belts are generally much weaker than those of Jupiter. The infrastructure for colonizing Mars in a way you imagine requires ...

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How does ISS protect astronauts from Coronal Mass Ejections?
0 votes

According to the ISS schematics on wikipedia, Destiny is quite in the middle of the station. That should provide some shielding. Zvezda seems to be more exposed, so that might not be the only reason.

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