Thursday, April 2, 2009

Does space have a temperature?

Does space have a temperature? Does it matter whether your close or far away from the sun? Could you catch a cold?



yes space has a Temperature. And it does change when your closer to the sun, but in space around earth it is like -256 degrees Faraonn heightt so you woulls definately catch a cold!!!!!




Yes, the temperature of space is the temperature a perfectly black object will settle to while sitting in it. In deep space, far from any stars, this is about 2.7 kelvins. This is caused by the microwave background radiation which permeates the universe and hits you from every direction no matter how hard you try to hide from it. It is actually the heat of deep space.




When calculating the temperature in space, it is important to understand that most estimates must take into account the varied makeup of space. Outer space is the portion of the universe which is almost entirely empty. Unlike the small pockets of our universe which are inhabited by stars, planets, and other large sections of matter, outer space contains very, very little. Nonetheless, it is not entirely empty, and this is important to understand when considering the temperature in space.





The short answer is that the temperature in space is approximately 2.725 Kelvin. That means the universe is generally just shy of three degrees above absolute zero ?the temperature at which molecules themselves stop moving. That almost -270 degrees Celsius, or -455 Fahrenheit.





In one sense, we can talk about the temperature in space as being 2.725 K. This shifts a bit from place to place, but not by much more than a thousandth of a degree. For all intents and purposes, this is the generally accepted temperature in space.





To understand it further, we can look at what a temperature actually is, and what space actually is. When wee measuring the temperature of something, what wee really talking about is the energy of the molecules in it. It has to do with the density of the molecules, which in turn helps determine how often they run into one another. If they don run into one another, they never really lose their initial energy.





Space is very, very empty. There aren many molecules out there, which means none of the molecules have much of a chance to run into one another. What does this have to do with the temperature in space? If we were to take a random molecule in space, say one that is part of the solar winds, and estimate its temperature, it would probably be around a million or more degrees Kelvin. That because this molecule hasn been bumping into things to get to the temperature it naturally wants to be at ?what is called its equilibrium.





How much sunlight a particular area of space is exposed to also plays an important role in determining the temperature in space in that area. When scientists talk about 2.725 K as the temperature in space, theye talking about an average temperature ?actually, what is called the Cosmic Background Radiation, which is the energy still left over from the Big Bang. If we were to look at space a bit closer to home, even somewhere very far away such as just outside of Pluto, the temperature would probably be closer to 35 or 40 K. Still very cold, but nowhere near as cold as somewhere in deep space, far from any sunlight.





So what is the temperature of space? That a bit like asking what the temperature of Earth is. We can find an average, and we can give a good guess for a particular region, but there is no one-size-fits-all answer. Still, 2.725 K is a fairly widely accepted answer to this frequent question, although it does not represent the temperature range that is as expansive as space itself.




Yes, space does have temperature. What the temperature is depends on where you are and the density of the matter around you, and the proximity of any star that might be radiating ionizing radiation. The temperature of space and density of matter is not uniform, as demonstrated by several satellites.




space is nothing. it has no temperature.





if energy is coming in (e.g. sunlight), the temperature of an object will increase. if energy is not coming in (e.g. shadow) the object will radiate heat. these two effects must be balanced when designing spacecraft. this is why so many are white, to limit the amount of heat they absorb from teh sun, bcuz they have ppl and electronics inside making heat that must also be radiated in to space.




Everything above zero K or absolute zero has a temperature. Well since something at zero K has a temperature of zero I guess everything does.




Space does have a temperature, and heat increases as you get closer to the sun.




Yeah it does have

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