Question

Which layer of the atmosphere is the top layer of the thermosphere?

Answer 1

The thermosphere is a layer of Earth's atmosphere. The thermosphere is directly above the mesosphere and below the exosphere. It extends from about 90 km (56 miles) to between 500 and 1,000 km (311 to 621 miles) above our planet.

Answer 2

The exosphere is the outermost layer of Earth's atmosphere.