Since the first two-hour excursion into space by Yuri Gagarin in 1961, the lure of manned space travel has proved irresistible to scientists, entrepreneurs, and entertainers alike. Today, as technology becomes more capable of enabling manned travel to Mars and Hollywood’s imagination runs wild...
sitn.hms.harvard.edu
“One common misconception is that outer space is cold, but in truth, space itself has no temperature. In thermodynamic terms, temperature is a function of heat energy in a given amount of matter, and space by definition has no mass. Furthermore, heat transfer cannot occur the same way in space, since two of the three methods of heat transfer (conduction and convection) cannot occur without matter.
What does this mean for a person in space without a spacesuit? Because thermal radiation (the heat of the stove that you can feel from a distance, or from the Sun’s rays) becomes the predominant process for heat transfer, one might feel slightly warm if directly exposed to the Sun’s radiation, or slightly cool if shaded from sunlight, where the person’s own body will radiate away heat. Even if you were dropped off in deep space where a thermometer might read 2.7 Kelvin (-455°F, the temperature of the “cosmic microwave background” leftover from the Big Bang that permeates the Universe), you would not instantly freeze because heat transfer cannot occur as rapidly by radiation alone.”
“The absence of normal atmospheric pressure (the air pressure found at Earth’s surface) is probably of greater concern than temperature to an individual exposed to the vacuum of space [1]. Upon sudden decompression in vacuum, expansion of air in a person’s lungs is likely to cause lung rupture and death unless that air is immediately exhaled. Decompression can also lead to a possibly fatal condition called ebullism, where reduced pressure of the environment lowers the boiling temperature of body fluids and initiates transition of liquid water in the bloodstream and soft tissues into water vapor [2]. At minimum, ebullism will cause tissue swelling and bruising due to the formation of water vapor under the skin; at worst, it can give rise to an embolism, or blood vessel blockage due to gas bubbles in the bloodstream.”
What I'm trying to convey is that if we aim to establish a 10-hour standard as the default, you'll definitely have to include every factor as a requirement to ensure resistance to AZ. This also involves addressing cases where the resistance to AZ is not met, whether they are relatively close or distant from the Sun or a heating star.
Outer Space isn’t Absolute Zero though. It is like in the -400 degree F temperature wise.
while lots of places in outerspace are AZ,
Just a note. Outer Space is near Absolute Zero temperature so you not right as mentioned already to Dread.
Edit: Done some readjustments and remove a comment of my regarding Dark Energy and Dark Matter.
