at what temperature is absolute zero

Absolute zero is the temperature where all vibrations of moleculeswould stop, and a substance would have no thermal energy at all.  That temperature can't be created, even in laboratories.  Even outer space is not quite that cold.Absolute zero is . . .-- negative  273.15° Celsius-- negative  459.67°  Fahrenheit-- zero Kelvin(Interstellar outer space is about  3 Kelvin.)