Questions tagged [astronaut]

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10
votes
5answers
2k views

A planet with toxic air

I just started thinking about a fictional universe where humans have colonized more or less any habitable planet (there is a huge concentration of habitable planets) and I'm trying to write down ...
5
votes
4answers
275 views

If an astronaut could remove their helmet in space, would Flight Control hear any sound during depressurization?

I assume it all comes down to how long would it take for the oxygen in an astronaut's helmet to evacuate. I figured it would happen in less than a second, and no sound would be picked up by the ...
1
vote
1answer
84 views

Cyborg and Interplanetary Exploration / Colonization [closed]

The exploration / colonization of space and nearby planets presents several challenges. Among these are lower gravity, lower pressure and exposure to both solar, and cosmic radiation -- each of which ...
1
vote
2answers
92 views

How to protect astronauts and spacecraft from solar flares on long space journey?

Background I have a spacecraft traveling from one planet to another, say from Earth to Venus. The journey will take at the least several weeks. During this time, the sun will emit a number of solar ...
4
votes
9answers
675 views

Why would a group of non-astronauts be sent on a space mission? [closed]

Question (inspired by this question, and of course the 1998 classic Armageddon) Is there a conceivable reason that NASA or any equivalent space agency (ESA, Roscosmos, etc.) would need to send non-...
22
votes
7answers
4k views

Creating a meteorite by throwing a stone [closed]

Bob is an astronaut. He is in love with Alice. For his next EVA in a LEO mission, Bob knows that he will be flying above Alice's farm, located in an area without light pollution, during a moonless ...