Page 27 - Ultimate Visual Dictionary (DK)
P. 27
SMALL STARS
Outer envelope consisting
STRUCTURE OF A RED GIANT mainly of hydrogen
Shell where hydrogen is
fusing to form helium
Cooling, expanding Intermediate layer
outer layers glow red
consisting mainly
of helium
Shell where
Surface temperature helium is fusing
6,300°F (3,500°C) to form carbon
Carbon core
temperature
180 million °F
(100 million °C)
Outer layers form Very dense core (one
40 million miles (70 million km) expanding teaspoonful weighs Cooling core
gas shell about five tons) glows red
Dense,
contracting
core
Cooling, About 8,000 Cold,
expanding miles (13,000 km) dead core
outer layers COOLING
RED GIANT PLANETARY NEBULA WHITE DWARF WHITE DWARF BLACK DWARF
Duration: 100 million years Duration: 35,000 years
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