Depending on the definition, a high-velocity star is a star moving faster than 65 km/s to 100 km/s relative to the average motion of the stars in the Sun's neighbourhood. The velocity is also sometimes defined as supersonic relative to the surrounding interstellar medium.
Making the world better, one answer at a time. The temperature changes within the stratosphere with increasing distance from the earth. The temperature increases with altitude, reaching a maximum of about 2 degrees Celsius This is unlike the troposphere, where the temperature decreases with increasing altitude.n the stratosphere, the temperature increas â¦ es with height due to absorption of radiation by ozone. Temperature changes when altitude is in the stratosphere because of  one things. It already rises when you climb up in the stratosphere.
In the layer above the troposphere, the stratosphere, temperature rises with increasing altitude. In the stratosphere, the air is heated from above by ultraviolet light which is absorbed by ozone molecules in the air. The tropopause is the boundary between the troposphere (below) and the stratosphere (above).n some circumstances, the temperature at the top of the troposphere can be as low as -80 C (-110 F). When a weather phenomenon called at  temperature inversion  occurs, temperature in some part of the troposphere gets warmer with increasing altitude, contrary to the normal situation.