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57 votes
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Are all modern astronauts at least passable phlebotomists?

By my count, the OP asks three questions. I'll anecdotally answer two of them ("Is it something that most or all astronauts are capable of doing, or are there just a few "designated drivers&...
Digger's user avatar
  • 4,185
45 votes

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

The Mars Society has a good indication of what the most serious medical issues have been in space flight. These include: A number of cases where the gloves leaked in an EVA. (STS-37, Mir Space ...
PearsonArtPhoto's user avatar
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38 votes

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

Straight from the NASA website, there are actually just a few requirements you need to meet to become an astronaut: A Bachelor's degree in engineering, biological science, physical science, or ...
Phiteros's user avatar
  • 5,626
36 votes

Would a broken arm/ leg be more painful in zero gravity?

Yes, your fracture would still hurt in microgravity. Likely worse. Pain from a fracture comes from inflammation and soft tissue damage around the fracture, as well as mechanical loading of the broken ...
Woody's user avatar
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35 votes
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Do Astronauts have their appendix removed?

No, but it is being considered, in particular for long duration deep space missions like going to the Moon. ISS astronauts could return to Earth in a short enough period of time that they could ...
PearsonArtPhoto's user avatar
  • 121k
33 votes
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Were any of the Apollo astronauts smokers and did that cause any problems?

In the early years of the Space program, smoking everywhere was considered normal. But NASA was ahead of its time. After members of the "Original Seven" were seen smoking on TV, NASA was ...
TrySCE2AUX's user avatar
  • 3,255
31 votes

How do EVA suits manage water excretion?

The shuttle (and ISS) EMU (Extravehicular Mobility Unit) has a condensing heat exchanger as part of its ventilation loop. The condensate is stored, used for cooling, and the excess is drained after ...
Organic Marble's user avatar
31 votes
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Besides health benefits, what are the advantages of including inertial gravity sections on spaceships?

The presence of gravity simplifies a number of common processes. Some examples: Separating liquids from gasses, eg. getting the water out of the air after you take a shower, or removing the hydrogen ...
Mark's user avatar
  • 15.3k
28 votes

Does lower gravity on Mars make it unsafe and unhealthy for humans?

This is actually a good question, and one that we really don't have a good answer to. Intuitively it must be better than zero gravity, but the question is, will it be good enough. There are a host of ...
PearsonArtPhoto's user avatar
  • 121k
25 votes
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What are the most serious injuries that astronauts have suffered while in orbit?

The crew of Apollo 7 were all ill. The commander, Wally Schirra, developed a cold and the other two crew members suffered prolonged motion sickness. Due to the illnesses, the crew failed to perform ...
dotancohen's user avatar
  • 6,774
23 votes
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Why might an astronaut wear their wristwatch very loosely aboard the ISS?

Nice observation, he is just doing it to show off! Check these out: https://twitter.com/cmdr_hadfield/status/326727757109268481?lang=en
UrasGungorPhys's user avatar
23 votes

Besides health benefits, what are the advantages of including inertial gravity sections on spaceships?

It would help you to learn which plants can grow properly in a greenhouse on the moon or Mars. When a seed germinates, the root starts growing downward with gravity, and the shoot grows upward to the ...
DrSheldon's user avatar
  • 48k
23 votes

Were any of the Apollo astronauts smokers and did that cause any problems?

Buzz Aldrin with (presumably unlit) pipe. Gemini 12 photo S66-62984
Woody's user avatar
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21 votes
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Is there still a legless phantom crew member on ISS?

Is there still a legless phantom crew member on ISS? As far as I can tell, no. For that particular torso, no, it was returned. The torso was launched on Expedition 2 with STS-102 from Cape Canaveral ...
blobbymcblobby's user avatar
20 votes

Would a broken arm/ leg be more painful in zero gravity?

More of a long comment than an answer - we don't know. The key to minimizing pain from a broken limb would be making the limb immobile. For a leg that would require the use of a splint as a primary ...
Fred's user avatar
  • 13.1k
19 votes

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

While I'm not sure it would qualify as a physical, bleeding injury, there was a near-death from drowning in space. Luca Parmitano, was an Italian NASA astronaut who nearly drowned during an EVA in ...
Kevin Peter's user avatar
19 votes

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

As other answers have already explained, the basic height requirement is 4 feet, 10.5 inches to 6 feet, 4 inches. However, just meeting that (and the other basic specifications) isn't going to get ...
brichins's user avatar
  • 411
18 votes
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Do space suits measure "methane" levels or other biological gases?

The US's only "modern, real" space suit, the Extravehicular Mobility Unit (EMU), was designed in the 1970s. It has a very limited sensor suite and no automation at all. The only sensors used in the ...
Organic Marble's user avatar
18 votes
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What will happen to human body when affected by two opposing G forces?

If you imagine that in your example the rocket's engine is not initially firing. The rocket and its occupants are falling freely towards the planet below. The occupants will feel weightless, because ...
Starfish Prime's user avatar
18 votes

How are the "lucky JPL peanuts" shared post-pandemic?

People received individual packages of peanuts and could sneak one under their mask. This page shows people holding individual packages of peanuts. And this video explains the procedure briefly.
Wyck's user avatar
  • 1,583
16 votes

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

Some crewmembers have been incapacitated by Space Adaptation Syndrome (SAS) as they adapt to the free fall environment. The most publicized case of this was "Payload Specialist" Jake Garn who was so ...
Organic Marble's user avatar
16 votes
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How can astronauts on ISS deal with dental emergency?

As in all things ISS, the crew would turn to the appropriate checklist. In this case, the Medical Checklist. Its table of contents contains these dentistry-related items: Here's the first page of ...
Organic Marble's user avatar
16 votes
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Martian dust getting into habitats

One proposed solution to contamination of a habitat by extra-vehicular activity is a Suitport which eliminates the need to bring the suits inside. The crewmember enters and exits the suit through a ...
Organic Marble's user avatar
16 votes

Would a broken arm/ leg be more painful in zero gravity?

The closest widely available thing that we have to floating in space is floating in water. Hydrotherapy is sometimes used for recovery when an athlete has broken a bone. I also happen have some ...
user3067860's user avatar
15 votes
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Healing of bruises and internal bleeding in 0g

It's a lot worse in space than on land. Quantitative studies on wound healing in zero g haven't really been done as of about 2013 (the latest paper I could find). However, there are some sources ...
Michael Stachowsky's user avatar
14 votes
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How long were the Apollo astronauts allowed to breathe 100% oxygen at 1 atmosphere continuously?

There are two different effects of oxygen toxicity, the Lorrain-Smith-effect and the Paul-Bert-effect. See Wikipedia. The Lorrain-Smith-effect may occur at a partial oxygen pressure above 0.5 bar for ...
Uwe's user avatar
  • 49k
14 votes
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Why would the Apollo Lunar Module pressure dump (to space?) valve have a bacterial filter?

It's one of several factors to prevent Earth microorganisms from contaminating the moon. The Apollo Program Summary Report states 8.5.2.1 Lunar-surface contamination.- Nations involved in the ...
DrSheldon's user avatar
  • 48k
13 votes

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

It is well known that finger injuries sustained during EVA plagued a lot of astronauts. The Lunar Surface Journal for Apollo 15 has some good references to this at 126:08:40, with links to post-...
JDT's user avatar
  • 593
13 votes
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Did the Apollo astronauts suffer any health effects from inhaling lunar regolith?

I have heard that on some Apollo missions the "dust got everywhere", "was very difficult to control", and "smelled like gunpowder". Also, when the Apollo astronauts were ...
markshancock's user avatar
13 votes
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How will SpaceX's Starship accommodate its 100 passengers from the effects of micro-gravity?

How will Starship ... accommodate micro-gravity? As of today, it won't. Making non-micro gravity by spinning about its long axis is impractical because the ship's radius is only 15 feet. Others have ...
Camille Goudeseune's user avatar

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