Complex sentence: Hall thrusters are often regarded as a moderate specific impulse (1600 s) space propulsion technology, the Hall effect thruster has benefited from considerable theoretical and experimental research since the 1960s.
Split into simpler sentences: Hall thrusters are often regarded as a moderate specific impulse (1600 s) space propulsion technology. The Hall effect thruster has benefited from considerable theoretical and experimental research since the 1960s.