Is there a highest temperature? Astrophysics

Is there a highest temperature?

It cannot get colder than -273.15 degrees Celsius (0 Kelvin, -459,67 Fahrenheit). The reason physics gives for this is that temperature is a measure of the kinetic energy of particles, i.e. it tells us something about how fast they are moving. When all motion stops, we have reached the minimum of the temperature scale, which by definition is 0. But is there also a highest temperature? One could assume that, because there is not only a minimum speed (0), but also a maximum speed (the speed of light c). But then it is not so simple, because the energy…