it means 'cold'-'ball'
The prefix "iono-" in ionosphere relates to ions, which are electrically charged particles. The ionosphere is a region of Earth's atmosphere where ions and free electrons are present, playing a key role in the propagation of radio waves.
The Ionosphere.
ionosphere
Electric currents in the ionosphere
the ionosphere is important is the it is in the thermosphere
ionosphere
Another name for the ionosphere is the thermosphere.
The other name for ionosphere is thermosphere.
Ionosphere is a part of the atmosphere: between 80 and 600 km; ionosphere contain ionized particles (ions).
The Radio waves are reflected back to Earth in the Ionosphere.
If you really do mean the ionosphere, and the astronaut is falling back to earth, the ionosphere is one of the upper layers - my best guess is that the heating effect of the rarified ionosphere would not be enough to cause death.Once you get into the lower atmosphere, though, the heating effect is large (the Concorde supersonic airliner expanded measurably while at full flight speed due to heating), and will cause burning up.
The distinguishing characteristic of the ionosphere is that it is ionized by solar radiation.