Recently, I have learned that the velocity of sound in air is increased or decreased by temperatures, assumed from the formula V = 331 + 0.6 x (TC), TC being the temperature in Celsius. Then, I realized that if the Celsius is low a number enough (negatively), the speed of sound would be 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? Would sound travel behind where it is intended to go?
This may be a stupid question, so please feel free to downvote and explain/comment if my question is illogical or doesn't make sense. Thanks!