Questions tagged [astronauts]

Questions regarding people present on spacecraft or space stations.

Filter by
Sorted by
Tagged with
20
votes
2answers
12k views

Size of Apollo era astronauts

I had read that the early astronauts were all 'short guys'. This made a lot of sense. A short man can have as much stamina and endurance as a large man, yet eat less, consume less oxygen & (...
17
votes
4answers
2k views

How were the pilots of the space shuttle able to operate the rudder after time in space?

I've just watched this video showing three astronauts who've returned from space. At around the 5:46 mark in the video we can see astronaut Chris Hadfield being carried out of the Soyuz capsule. I've ...
14
votes
3answers
2k views

If a human is being sent to space in a rocket, does the seating angle matter?

All manned spacecraft have had seats in an "on-back" angle for launch. What is the benefit of this seating position for a manned spacecraft launch?
10
votes
2answers
526 views

Who is the space artist? Patterns on the Spheres robots on the ISS

The August 24, 2016 NASA news item: New NASA Record Holder For Cumulative Days in Space congratulates ISS station commander Jeff Williams for passing 520 total days in space - a new NASA astronaut ...
9
votes
1answer
8k views

Can astronauts wear eyeglasses inside their helmets during launches and landings?

Are astronauts allowed to wear their eyeglasses inside their helmets during launches and landings?? Are there any special considerations or rules? During spaceflight (launches and landings) there can ...
9
votes
2answers
2k views

Is it possible to prevent muscular atrophy in microgravity with proper exercises?

Is it possible to prevent muscular atrophy in microgravity (space station, spacecraft etc.) by proper exercises? Urban dwellers here on Earth can train/develop arm muscles to the equivalent of their ...
7
votes
2answers
808 views

What happens to a body, that has been exposed to vacuum, once brought back onboard?

You are on a ship in the cold vacuum of space. You find a body of an astronaut exposed to vacuum (for this instance just assume human, but you never know). The body was essentially freeze dried and ...
6
votes
1answer
164 views

Aspects of “true deep space environment” on Gateway not thoroughly explored by decades of habitation of nine space stations already?

The ABC News article President Trump prompts state of confusion over space policy with tweet covers POTUS' tweet and NASA director Bridenstine's clarification tweet a few hours later, as well as cites ...
4
votes
1answer
266 views

Who was the first person in space to “be on TV”?

The Apollo missions had video cameras and transmitted live images to Earth, but I am not sure if there were any video transmission prior to the Apollo 11. Question: Who was the first person in space ...
4
votes
1answer
206 views

Exactly how does one lope on the Moon?

This answer includes several quotes from apollo astronauts that have walked on the moon. They describe a form of bipedal locomotion they call loping. Question: Exactly how does one lope on the Moon? ...
4
votes
1answer
340 views

When during the flights did astronauts use the Valsalva device?

A spongy material is installed to the inside helmets called the Valsalva device (top right in this image) allow astronauts to do the Valsalva maneuver to relieve pressure on their eardrums when there ...
2
votes
1answer
156 views

Which Apollo 12 astronaut is shown examining the Surveyor 3 lander in this photograph?

I used this image in Exactly what was Surveyor 3 doing with a spring-loaded boxing glove-like device? but in the captions for the image on two NASA sites I noticed a disagreement in the identify of ...
1
vote
1answer
178 views

Were there special circumstances leading to these astronauts' spacewalking 5 days after arrival at the ISS?

@This answer describes two cases where astronauts performed space walks less than six days after arriving at the ISS; Timothy Kopra (Expedition 46) Andrew Feustel and Richard Arnold (Expedition 55) ...
1
vote
1answer
197 views

Astronauts and Time Dilation

Do astronauts experience any effects of time dilation? Based on my (very limited) understanding, both a change in speed and in gravity should have an effect - and astronauts experience both. The ...
87
votes
3answers
21k views

Could an Apollo astronaut stand up if they fell on the moon?

I was watching old Apollo footage and noted how astronauts on the moon had a very particular gait most likely due to the poor flexibility of the EVA suits, low gravity, and need for safety. I was ...
1
vote
3answers
22k views

How would one go about proving humans have really been to outer space?

Background: I am 40 years old, and in my entire life the only face to face eyewitness event that I can remember where humans actually observed an attempt to fly into outer space, the craft exploded ...
38
votes
3answers
9k views

Are there any vegetarian astronauts?

Following this question and other food-related questions, including on Quora, I failed to see mention of a meal without meat or fish. I suppose: It is technically possible to have healthy vegetarian ...
22
votes
3answers
5k views

Is water on Mars the same as Earth water?

I would like to know how similar Mars water is to Earth water. Can we survive on Mars with Martian water without any major health issues etc?
26
votes
5answers
9k views

Have there ever been people trapped in a shut down spacecraft?

I was reading some one-line sad stories and came across this one: Goodbye mission control, thanks for trying. So I was wondering if there have ever been people trapped in a spacecraft without a ...
24
votes
2answers
5k views

How long does it take to get from a spacewalk to being inside the ISS and out of your suit in an emergency?

I just saw a show that featured an incident in which an astronaut on a spacewalk to install the Canada 2 arm on the ISS was temporarily blinded by contaminated water inside his helmet. His colleague ...
18
votes
4answers
13k views

How many astronauts never got to fly in space in their astronaut career?

We know that many people who take astronaut training and become astronauts may never get to fly to space at all. How many astronauts (number or %, or both) have never flown to space in their ...
11
votes
1answer
1k views

How is ISS commander chosen?

I've been looking at the ISS's List of International Space Station expeditions, and I'm curious about how the commanders are chosen. I can't really find anything that stands out. Sometimes the ...
9
votes
1answer
506 views

Has a non-space treaty citizen ever been in orbit?

The Outer Space Treaty of 1967, according to Wikipedia is ratified by any country with a chance of getting there - Article VI Makes each member country responsible for it's citizens actions. Article ...
1
vote
1answer
617 views

What psychiatric and psychological tests do people need to pass to become astronauts?

I am writing a short film about an astronaut during re-entry to earth. Part of the conflict I wrote is that the astronaut could not pass the mental tests required. Could anyone tell me any tests ...
30
votes
4answers
11k views

Did any astronauts on a mission complain about waking up?

A bit of a strange question that comes from "The Martian" - in Chapter 12 is a sequence about the entire crew waking up and some complaining about it. I would expect that on a 31 day mission every ...
22
votes
1answer
956 views

Does SpaceX have any significant additional legal hurdles for flying private citizens around the moon?

SpaceX recently announced they are planning to fly two private citizens around the moon. I'm sure a normal space flight has all sorts of legal complications, but does the addition of 2 private ...
19
votes
3answers
12k views

What prompted Lovell on Apollo 8 to announce “there is a Santa Claus”?

On Apollo 8, following the first trans-Earth injection, when the crew came back into contact with Houston, Lovell said: "Please be informed there is a Santa Claus." (Transcript) Given that Apollo 8 ...
14
votes
2answers
3k views

Would an astronaut experience a force during a gravity assist maneuver?

When an astronaut is inside of a ship accelerating (from engine burns), or decelerating (due to reentry) they experience a tug in a relative direction. Suppose an astronaut is in a space ship that is ...
12
votes
1answer
1k views

Do astronauts aboard ISS always follow orders?

There have been many documented cases of astronauts not following direct orders during the Skylab and Apollo missions. Some of these have been publicly reprimanded but most have not. Most of the ...
12
votes
2answers
243 views

Why don't astronaut helmets fog up? What's the chemistry and thermodynamics behind keeping the field of view clear even during heavy breathing?

Some space walking involves exercise (e.g. moving heavy stuff around) and the outside surface of a faceplate is constantly radiating its heat out into space. At night that thermal radiation is not ...
12
votes
2answers
2k views

What would happen if an Apollo astronaut landed on Pluto?

Pluto seems to be composed of Nitrogen and other ices that would be fluid or gaseous at higher temperatures. So what would happen if an astronaut using an Apollo era space-suit (crucially with that ...
11
votes
2answers
4k views

What is Astronaut Sunita Williams wearing on their wrist?

The most recent installment of NPR's Brave New Workers A NASA Astronaut Stays In Orbit With SpaceX And Boeing (article & podcast) covers Astronaut Sunita Williams extremely cool new job. She's ...
8
votes
1answer
2k views

Oxygen toxicity vs Apollo mission preparation

In the article on Apollo command module design, I read: The cabin atmosphere at launch was changed to 60% oxygen and 40% nitrogen at sea-level pressure: 14.7 psi (10.1 N/cm2). During ascent the cabin ...
7
votes
2answers
321 views

Cosmonauts and Astronauts

American, Japanese and ESA space travellers are astronauts, Russian or Soviet space travellers are cosmonauts. But are there exceptions from this? Americans visiting the ISS the last years have used ...
7
votes
1answer
662 views

What protocol is in place if an astronaut kills another astronaut in or around the ISS?

Say one astronaut murders another astronaut in or around the ISS, what would happen? Are there any protocols or instructions about what to do? Calling the space police does not seem like an option.
5
votes
0answers
418 views

What can an astronaut do better than the Curiosity rover? [closed]

Firstly, I want to say that I'd be the first person with their hand up when asked, "So who wants to go to space?". There's nothing I'd love more than to go. But from looking at the amount of ...
5
votes
1answer
729 views

How fast do they spin astronauts these days? Maximum routine g-training for astronauts in the 21st century?

Comments got me thinking about NASA's 20 g centrifuge. Gemini astronauts pushed to 7 or perhaps 8 g's as discussed in this answer but these days with nicely throttleable engines astronauts going to ...
5
votes
3answers
16k views

How are astronauts protected from radiation in a spacecraft?

How are astronauts protected from radiation (alpha, beta, gamma rays, uv rays) by their spacecraft? Is the spacecraft built in a special material?
5
votes
1answer
209 views

How would humans with appropriate equipment travel the surface of Saturn's moon Titan on foot?

Taking into account the physical characteristics of Titan (e.g. surface gravity, atmospheric pressure), what would be the most efficient method of motion for an astronaut to travel the surface of ...
29
votes
1answer
6k views

Did the astronauts seated on the space shuttle mid-deck have responsibilities during reentry and landing?

Space Shuttle mid-deck, it doesn't look like there is much for the astronauts there to do. I recognize this photo was not taken during a mission. I couldn't find an image of the mid-deck during ...
17
votes
2answers
12k views

Do astronauts get Netflix on ISS?

I've been wondering about the internet connection on the ISS, and how it's used. We were talking in chat about astronauts personal belongings and free time, and it made me wonder about how they use ...
11
votes
1answer
2k views

What do astronauts do with their trash on the ISS?

Astronauts often stay more than a year on the ISS, they produce trash like any other human. Is there like a limit that they may produce ever day or maybe some measures were put in place to reduce the ...
11
votes
1answer
504 views

Did the crew of Soyuz MS-10 pass the Karman Line?

Just wondering if Nick Hague got his gold astronaut wings.
8
votes
2answers
4k views

How do astronauts drink or eat in space?

As there is zero gravity in space, how do astronauts drink liquid from a container? Do they suck the liquid or is there any mechanism for that? Are there any changes in oesophagus?
8
votes
1answer
323 views

Does a persons weight effect their potential selection to be an astronaut?

Every extra bit of weight cost extra to send to orbit. Presumably it also impacts the possible payload. Assuming a generally healthy build, and otherwise physically able and fit person. In ...
7
votes
3answers
1k views

Could the Apollo astronauts distinguish Earth's continents and oceans from the moon?

This article "Earthshine Reflects Earth's Oceans And Continents From The Dark Side Of The Moon" indicates that the difference in reflection of light from the Earth’s land masses and oceans can be seen ...
7
votes
0answers
149 views

How does European jurisdiction in the ISS works?

This answer notes that participant nations have jurisdiction over their modules. So in a US module, you are in US jurisdiction, etc. Which means that in an European module, you are in European ...
6
votes
2answers
286 views

Is there anything preventing an astronaut from opening their helmet and exposing themself to the vacuum of space?

Say an astronaut had some sort of psychotic break during a spacewalk, is there any mechanism or failsafe that would prevent the astronaut from opening their helmet and exposing themself to the vacuum ...
6
votes
1answer
258 views

Where and when did the traditional “wave across the ditch” take place?

I’ve heard that before a launch American astronauts had one last chance to see their family by waving across a ditch (which apparently wasn’t really a ditch?). I’m curious, where and exactly when (day ...
6
votes
2answers
432 views

Does America's Birthright Citizenship law apply to the American side of the International Space Station?

In a scenario in which a pregnant Russian woman were to give birth while visiting the International Space Station, and if she were to give birth while on the American side of the ISS, would that baby ...