If a rocket were launched to a height of 210 kilometers above sea level which layer of the atmosphere would it rise to?

If a rocket is launched to a height of 210 kilometers above sea level, it would reach the thermosphere, which extends from about 85 kilometers to 600 kilometers above the Earth's surface. This layer is characterized by a significant increase in temperature with altitude and contains a small amount of air. Above the thermosphere lies the exosphere, which begins around 600 kilometers.