If Physics indicate Space temperature as 2.73 k ,Why do atronauts have to wear air conditioned suits?

Answer 1

2.73 K = -454.486 ºF ... There is much more to the explanation when we use the word "conditioned", does not necessarily mean >> "air conditioned"
A spacesuit must protect the astronauts from the harsh environments of space. In space there are very few air molecules. Note that air pressure is the result of the movement and collisions of air molecules. This absence of molecules is referred to as a vacuum.
An astronaut's body fluids would fizz and bubble if he or she was wearing street clothes and was placed in a vacuum. Thus, one of the main purposes of the spacesuit is to provide a leak-proof bladder which stores air pressure to protect the astronaut's body. This function is so important that sometimes spacesuits are referred to as pressure suits

The Earth's atmosphere exerts a pressure against our bodies. This pressure is 14.7 pounds per square inch at sea level. This pressure helps keep our bodily fluids from escaping or changing into vapor, although some is lost through perspiration and other means. This air pressure thus places a stress on our bodies. Gravity also places a stress on bodies. When this air pressure is removed, an astronaut's body changes to release this stress according to Le Chatelier's principle. This is achieved through the boiling of bodily fluids. The internal stress in the astronaut's body drives this change.

Additionally their suits are white because white reflects heat better than dark colors.

The purpose of this launch/entry suit is to provide the astronauts with protection against the heat and pressure changes during liftoff. It also provides an extra layer of protection from cold or fire in case of an emergency.

Answer 2

In outer space, where there is no or little atmosphere, the only factor that is significant is radiation. To get an idea consider the effect on earth of radiations from the sun or lack thereof. When you are directly exposed to the sun, you feel the heat. If you go into the shadow of a tree it's cooler. In empty space, both effects are amplified. When you are exposed to the sun, you absorb much more radiations because there is no atmosphere to protect you. It then gets very hot. When you are not exposed, the radiations that you emit cool you down quickly because there is no warm atmosphere to protect you. It then gets very cold. The air conditioned suits protect astronauts from these two extremes.

Answer 3

Suit insulation protects the astronaut from extreme high and low temperatures of space but also works to keep their body heat inside the suit. Although weightless, maneuvering ones self in space is physically demanding creating substantial body heat. Imagine walking around in summer wearing a plastic bag.

Space suits, (Extravehicular Mobility Units or EMUs), contain a cooling system which consists of a network of water circulation tubes that are held close to the body. Body heat is transferred to the water where it is carried to a porous metal plate that is exposed to the vacuum of outer space where it freezes, then begins to sublimate (a cooling process) or turn directly into water vapor and disperses in space.

Hope that explains it for you,
Have fun!

Answer 4

Air condition here does not refer to the coooling unit in your house. It is what it literally means, controller of temperature of the air inside the suit.

Answer 5

I believe its for air regulation, such as the gases in the air, due to not much oxygen because there is no plants in space to produce oxygen. Thats what I think is true.

Answer 6

I believe its for air regulation, such as the gases in the air, due to not much oxygen because there is no plants in space to produce oxygen. Thats what I think is true.

Answer 7

air condetion is to regulate temp.
it not jus means cooling , but heating too
acc to Newton law of heat transfer ,rate of heat transfer is proptional to temp difference which is around 300k soto protect rapid heat loss it is one of the use.
in case space is full of all type of rar. high energy ray are absorbe by suit to protect the astronauts so due to this absorption heat is genrated whach is 2 be removed.
body heat is neglagible infront of the radient energy so i dont think it must be a factor.

Answer 8

If you ate the meals that the astronauts do and had to fart, wouldn't you want an airconditioned suit too??? LOL

Just kidding, I don't know.

Answer 9

I would assume because the body heat they generate is completely enclosed in their suits, and without any available ventilation it would get quite warm, quite quickly.

Answer 10

because theres high thermal change in space in the shade it mite be 2.73k but in the sunlight it might be 700k its caused by the sun