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The Sun and the Stars () The Sun and Stars September 9, 2013 1/5

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The Sun and the Stars

() The Sun and Stars September 9, 2013 1 / 5

How big is the sun?

Diameter of 864,400 miles! (Earth’s diameter is about 8000 miles)

1,300,000 Earths could fit in the sun!

The sun’s mass is about 4400000000000000000000000000000 lbs(99.8% of all the mass in the solar system!)

The sun is a mid-sized star

() The Sun and Stars September 9, 2013 2 / 5

What is the sun?

91% Hydrogen, and 9%Helium

mostly plasma

constant NUCLEARFUSION reactions convertHelium to Hydrogen, makingheat and light!

temperatures reach27, 000, 000◦F in core, and10, 000◦F on the surface

() The Sun and Stars September 9, 2013 3 / 5

History of the Universe

() The Sun and Stars September 9, 2013 4 / 5

What do we think will happen to the sun?

() The Sun and Stars September 9, 2013 5 / 5