What is the exosphere made out of?

Answer 1

Not much. In the exosphere the density of gasses is so low that particles collide only rarely. That makes it possible for energetic particles to escape Earth's gravity altogether. Here, the Earth's atmosphere gradually thins out and merges with interplanetary space.

Answer 2

This is the uppermost layer of the atmosphere. The density and pressures are very low, gas molecules are few and far between. Some of these light gas molecules may include hydrogen, helium, carbon dioxide, and atomic oxygen.

Answer 3

Satellites, Falling meteors, and space junk from shuttles etc.

Answer 4

The exosphere contains mostly hydrogen, with some helium, carbon dioxide, and atomic oxygen near the exobase.

Answer 5

The composition of the exosphere is mainly atomic oxygen, hydrogen, helium and molecular state of nitrogen, oxygen.