Air-breathing electric propulsion (ABEP) uses upper atmospheric air as a fuel to power an electric thruster on a satellite. In a nutshell, a satellite’s device collects air from the upper ...

Turns out this actually reduced the air velocity through the thruster, so he quickly switched back to the original configuration. Tests on a single stage of the thruster were very promising ...

When blood reaches the lungs, a larger volume of air is needed to replace the oxygen ... the body increases the rate and depth of breathing. The time taken for the breathing rate to return to ...

The air that enters the nasal cavity flows down the trachea. The trachea has a number of adaptations: cartilage rings in the walls of the trachea help to keep it open ciliated epithelium and ...