What is another word for thermosphere?
Pronunciation: [θˈɜːməsfˌi͡ə] (IPA) 
The thermosphere is a layer of the Earth's atmosphere that is defined by its high temperatures, which can reach over 2,000 degrees Celsius. Synonyms for the word thermosphere might include the upper atmosphere, outer atmosphere, or exosphere. The thermosphere is the highest layer of the Earth's atmosphere, which means that it is further from the planet's surface than the troposphere, stratosphere, and mesosphere. The thermosphere is also home to the International Space Station and other orbiting satellites. Synonyms for the thermosphere may be used to describe this particular atmospheric layer in scientific or technical contexts.
