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Star Trend Definitions and Concepts
An article about Astronomy & Deep Space
Refer to the HR Diagram (Hertzsprung-Russell Diagram) (Characteristics of Stars chart) page 15 of the Earth Science Reference Tables
Main sequence: a line on the HR diagram showing the patterns of stars when comparing luminosity and temperature and color
Luminosity: absolute (actual) brightness of a star (distance is NOT important)
Apparent brightness: the brightness that we observe (depends on size and distance)
Massive stars: blue super giants, high luminosity, large stars, VERY hot, BLUE
Low mass stars: red dwarfs, low luminosity, small stars, cool, RED
Fuel of the sun/stars: hydrogen is converted to helium (fusion)
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