STELLAR EVOLUTION

Depicts the major stages in the evolution of a solar mass star: contraction to protostar, yellow main-sequence phase, expansion to red giant stage, and contraction to blue-white dwarf.

1 projector, 300 watt; 110V/60Hz or 220V/50Hz
SS 427
SS 427 E - int'l. version
SS 427R - resets automatically
SS 427R E - resets automatically, int'l. version