Questions tagged [astronauts]

Questions regarding people present on spacecraft or space stations.

Filter by
Sorted by
Tagged with
8
votes
1answer
797 views

How did Alexey Leonov bleed off the pressure in his space suit?

On the Voskhod 2 mission, cosmonaut Alexey Leonov performed a spacewalk which ran into issues when Lenov's spacesuit had some sort of pressure buildup. From the wiki - [Leonov] was forced to bleed ...
22
votes
1answer
938 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 ...
1
vote
1answer
177 views

What happens to a spacecraft in flyby Mission?

I am not a science guy, So I have couple of questions I want to know what happens to a spacecraft whose mission is to flyby a planet E.G. Mariner 4 Also Viking 1 (lander mission) is it still on mars?...
33
votes
4answers
49k views

How tall do you have to be to be an astronaut?

Currently I am 13 years old and the thought of space amazes me. I am 5 feet 7 inches (1.7 m) tall. I researched how tall you had to be to be an astronaut. Sites agreed and disagreed, throwing out a ...
4
votes
1answer
6k views

How many countries have sent personnel to the ISS?

How many countries have sent astronauts or other trained personnel to the International Space Station?
7
votes
3answers
892 views

How many earth stations had astronauts on-site during John Glenn's orbit in Friendship-7?

The Washington Post just republished it's February 21, 1962 article covering the launch, Earth orbit, and safe re-entry and recovery of (Senator) John H. Glenn, in recognition of his service and ...
3
votes
1answer
296 views

How long can an astronaut stay in space and later have children?

While reading about the effects of microgravity on reproduction I was thinking about all the other aspects of space flight and how they may decrease fertility in both men or women (such as changes in ...
15
votes
1answer
807 views

Does having only 3 people on the ISS create workload problems?

There are a couple of quick ways to check the number of people in space, right now there are 3. Usually the ISS has a crew of 6. The launch planned for the other 3 crew was delayed indefinitely due to ...
3
votes
1answer
251 views

Is printing boarding pass to space a common practice?

I saw these boarding passes the other day in JAL museum. Funny enough, since it's printed by JAL, which does not fly to space yet, I guess this should be considered as a correspondence flight :) ...
10
votes
2answers
520 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 ...
7
votes
2answers
782 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 ...
37
votes
7answers
10k views

What are the most serious injuries that astronauts have suffered while in orbit?

Among astronauts in orbit, what is the worst real injury recorded? Has anyone hit himself on the thumb with a hammer or something? Squeezed a finger in a closing door? Gotten poisoned by some leaking ...
3
votes
0answers
129 views

Astronauts with oversensitive skin after returning from space

I have heard that some astronaut (maybe Scott Kelly) complained about itchy, sensitive skin after returning from space. Is it true? After growing 2 inches, now he can't sleep on a bed and wear Earth ...
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 ...
2
votes
2answers
287 views

Why did these cosmonauts retire early in their careers?

Is it known why Roman Romanenko and Dmitry Kondratyev retired early in their careers as cosmonauts?
5
votes
1answer
811 views

In what way is artificial gravity expected to avoid/reduce bone loss?

It's my perception that discussions of the use of artificial gravity for manned deep-space travel missions are primarily centered on avoiding bone loss. Am I right so far? Microgravity seems to be ...
1
vote
3answers
493 views

How would travel to Mars without artificial gravity affect a crew's initial experience in Mars gravity?

This answer and the linked YouTube video discuss some difficulties with the experience of artificial "gravity" generated by small rotating craft (like one that could be launched to Mars in the near ...
10
votes
1answer
4k views

How have space suits dissipated the heat removed from astronauts?

I never thought about this until reading the comments below this answer. To radiate something like 150W (a very conservative lower limit of human + suit systems heat production - see @Uwe 's comment ...
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 ...
14
votes
1answer
1k views

Scott Kelly age vs Twin's

Scott Kelly just returned from nearly a year of orbiting the Earth in the space station. How much younger is he than his twin, now that he has spent a significant amount of time, traveling at high ...
6
votes
1answer
1k views

Why was Buzz Aldrin not Awarded the Congressional Space Medal of Honor? [closed]

According to the award's requirements, the Congressional Space Medal of Honor may be awarded to "any astronaut who, in the performance of his duties, has distinguished himself by exceptionally ...
9
votes
1answer
2k views

How many astronauts are left handed?

One kind of 'popular science' fun facts that is very popular is to show how many of the individuals belonging to a notable group of people that are left handed, often showing a large disproportionally ...
13
votes
4answers
1k views

What was the reason for an odd number of astronauts in almost every group of the early US space program?

We are familiar with the first groups of NASA astronauts, like the Mercury Seven and the New Nine. Something about that struck me as (literary) odd; All the first twelve astronaut groups had an odd ...
14
votes
3answers
1k views

How many seconds of near-zero gravity are practical with a Reduced Gravity Aircraft?

When I saw "50 seconds of weightlessness" (see quote below) I made a very rough estimate based on 45 degrees nose-up to 45 degrees nose-down Reduced Gravity Flight centered at about 35,000 feet where ...
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 ...
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 ...
1
vote
0answers
107 views

NASA Astronaut Group 2 Press Conference

Is there footage of the NASA Astronaut Group 2 press conference online? I can watch the press conference for the Mercury astronauts here, but can't find Group 2 footage. I've seen snippets of the 1962 ...
7
votes
2answers
301 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 ...
18
votes
3answers
11k 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 ...
10
votes
4answers
37k views

Becoming an astronaut with engineering background

Which engineering branch will be most suitable for becoming an astronaut, and what other options do I have if I want to become an astronaut with an engineering background?
17
votes
1answer
3k views

Would it be possible to get back to Earth from the ISS without any ground support?

In the TV show Last Man On Earth we follow a small group of immune survivors after an apocalyptic plague has essentially wiped out humanity. It is revealed that a single astronaut on the ISS has also ...
26
votes
1answer
3k views

When/where did the cosmonauts fight wolves?

When/where did the cosmonauts fight wolves? or was it bears? With a gun? Could someone provide a more complete story? One of comments on the article TidalWave linked in the Soyuz joysticks question ...
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 ...
6
votes
1answer
5k views

How do we create a zero gravity environment on earth?

I have read somewhere that to-be astronauts are trained on earth to be deft enough when they are in space which has zero gravity. How do we create a zero gravity situation on earth? On earth even if ...
19
votes
6answers
9k views

How can astronauts float in space without being affected by the gravitational force of nearby objects?

According to the Newton's law of universal gravitation: Any two bodies in the universe attract each other with a force that is directly proportional to the product of their masses and inversely ...
2
votes
0answers
62 views

How to be an astronaut? [duplicate]

I always wanted being an astronaut. I am now going to high school and want to major astronomy in university. The problem is I live in South Korea, not US. Can you guys tell me how a foreigner can be ...
28
votes
1answer
3k views

What are the “unpleasant effects” of having a cold in microgravity?

I went to Technik Museum Speyer's space exhibition, which presented an excellent overview of the Apollo missions in a series of posters. The poster describing the Apollo 7 mission (an Earth orbit test ...
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?
10
votes
2answers
3k views

How important is the size of an astronaut?

It seems to me that weight and size would be important in choosing spacefarers for many reasons; I came across this Wikipedia article where the Chinese astronauts (taikonauts) have to be between 50 ...
17
votes
1answer
2k views

How many astronauts have had spiritual experiences while in space?

In the video Overview 5 astronauts talk about having powerful spiritual experiences in space, and their descriptions match enlightenment experiences. This strikes me as rather more important than you'...
58
votes
3answers
12k views

Why did NASA send two astronauts to the moon instead of one?

I can think of a lot of good reasons for both arguments, and the Soviets made the opposite call for their lander, but what I'm interested in here is this: Given the mass penalty of another man (body ...
40
votes
4answers
4k views

When the ISS accelerates, do the astronauts feel it?

The ISS has thrusters to avoid debris and to combat orbital decay. Do the astronauts feel the station accelerating? Do they have to hold onto something and is it the same when they rotate the station ...
2
votes
2answers
222 views

Is exposure to cosmic radiation more dangerous on some body parts than on other?

Radiation causes genetic mutation and every (human) cell in our body have the same genes. But on Earth we don't get cancer as often in the foot as in the genitals or in the brain. Some parts of our ...
24
votes
2answers
2k views

Will a Dragon v2 ever bring 7 astronauts to the ISS?

The Dragon v2 has 7 seats whereas the Soyuz only has 3. But the Soyuz uses all 3 seats for astronauts/cosmonauts to bring to the ISS. I suspect that Dragon v2 will bring 3-4 people to the ISS in one ...
13
votes
2answers
3k views

Does NASA hire foreign nationals as astronauts?

I've dreamed about it ever since I was six, and where I live people laugh at me when I tell them about this because for one, no one's ever been an astronaut in my country and two, I'm a girl. But I'll ...
7
votes
2answers
2k views

How do astronauts sleep in zero G?

Perhaps this is a strange question but I've always wondered how astronauts, particularly those aboard the ISS, sleep in zero G. Do they just hang out in "space" or do they have beds they strap ...
16
votes
2answers
11k 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 ...
5
votes
1answer
200 views

ISS: Procedure in case of collision warning

In case of collision warning occurring to the ISS, if ISS can't be moved the procedure is to go to a Soyuz and wait. Can anyone gives details about the procedure? Is the Soyuz hermetically closed ...
19
votes
2answers
7k views

Was Valentina Tereshkova pregnant while in space?

Valentina Tereshkova was the first woman in space. I have been reading the book called "The Astronaut Wives club". In it, they discuss women flying in space, and mention that Valentina was the first ...
19
votes
2answers
4k views

Is it possible for a human to walk on an asteroid?

"We’ll start by sending astronauts to an asteroid for the first time in history" (President Barack Obama on Space Exploration in the 21st Century".) With a very low gravity, an asteroid is not ...