Space Exploration
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peterh
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43 Answers

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25 votes
Accepted

How much did all the space agencies spent on rockets launching and space exploration? What are the benefits for me and you?

23 votes

How do I dress for a hike on a hot summer day on Titan?

16 votes
Accepted

Could ozone be used in a biodome on Mars?

14 votes
Accepted

How much does a swing-by change the orbit of the planet?

11 votes

Fast spinning solar cells to clear Martian dust possible?

11 votes
Accepted

Sending a camera to space?

10 votes

How far is zero-gravity from ground?

9 votes

Why does NASA publish all the results/data it gets?

8 votes
Accepted

Could electric fans lift a rocket strait up like a multi propeller drone?

6 votes

Can the top soil of Mars be transformed to be arable, and how to do it?

6 votes

What will be the best way to convert nuclear fusion energy into thrust for a rocket?

6 votes

Could the Moon be terraformed by outgassing its oxygen?

5 votes
Accepted

How quickly is the force of gravity exerted? Is a finite "speed of gravity" used in orbit calculations?

5 votes

Why would a warp drive move you at all?

5 votes
Accepted

What is the speed that we can reach using tsar bomba as a propellant?

5 votes

A starship is traveling at 0.9c and collides with a small rock. Will it leave a clean hole through, or will more happen?

5 votes
Accepted

What will happen to space machines if Earth is destroyed?

5 votes
Accepted

If Voyager 1 were to return to the Earth now, how much "younger" it would be than its replica displayed at JPL's Von Karman Auditorium?

4 votes
Accepted

Could electricity be generated from a Martian dust storm?

4 votes

What would the full hypothetical Mars terraforming roadmap look like?

4 votes

Has any human ever had the choice to leave Earth permanently?

4 votes
Accepted

Why don't astronauts inside affect inertia of the ISS?

3 votes

Can we build a gravitational Radio by modulating the speed of Nuclear Reactions?

3 votes
Accepted

Can an Earth like planet support life by building a Dyson Sphere across a White Dwarf?

3 votes

What is the smallest number of humans required for colonization?

3 votes

Are there proven sufficient $^3\text{He}$ reserves in the inner Solar System to sustain fusion reactors for colonisation?

3 votes

Why is that max-Q doesn't occur in transonic regime?

3 votes

How does a planet's gravity push away smaller bodies that would otherwise intersect its orbit?

3 votes

Would a settlement on Mars need to import Nitrogen?

3 votes

How is a satellite constellation launched?

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