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Results tagged with universe
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user 189627
The universe refers to the cosmos; all of space-time and that which exists as part of it. Alternatively, it can refer to the observable universe, which only contains the part we can see. Questions tagged with this should ask about physics at scales the size of the universe or specific properties of the universe
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Velocity of Sound of Air Being Negative?
If there is a place in the universe cold enough with an abundance of oxygen to meet such conditions, or if we say theoretically it is existent, how would the negative velocity act like? …
