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Star Life Cycle

TermDefinition
All stars go through # life cycle(s) 3
Life cycle(s) of a star 1. Nebula 2. Protostar 3.Main Sequence
Life cycle(s) of an Average mass star Nebula, Protostar, Main Sequence, Red Giant, Planetary Nebula, White Dwarf, Black Dwarf (About the size of the Sun)
Life cycle(s) of a high mass star Nebula, Protostar, Main Sequence, Red Supergiant, Supernova, Neutron Star (1.5X-3X bigger than the Sun)
Life cycle(s) of an extremely high mass star Nebula, Protostar, Main Sequence, Red Supergiant, Supernova, Black Hole(>3X bigger than the Sun.
Nebula A huge cloud of dust and gas made of hydrogen and helium held together by gravity; star nursery
Protostar A young star in the early stages of formation; nuclear fusion begins (light and heat produced)
Main Sequence 90% of stars are in this stage of their life cycle
Red (Super)giant Star expands;fuel begins to run out
Planetary Nebula A ring-shaped nebula formed by an expanding shell of gas around an aging star
White Dwarf A star that has exhausted all of its nuclear fuel; planet sized and very dense
Black Dwarf A dead star that no longer gives off light or heat
Supernova An extremely bright explosion of a star
Neutron Star The extremely dense remains of a dead star; very small and very dense
Black Hole A gravitational field so strong that not even light can escape
Causes different life cycles in stars Their MASS
The process where a protostar is officially a star Nuclear fusion
Created by: nizzat8751
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