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.
troposphere(temperature decreases with an increase in altitude), stratosphere(temperatures remain constant to a height of about 12 miles, temperatures increase in the stratosphere because it is in this layer that the atmosphere's ozone is concentrate), mesosphere (temperatures decrease with height.