Milky Way Galaxy

Sun

• Sun is the center of the solar system.
• The sun produces heat and light energy using nuclear reactions.
• The sun is an average sized star, but one million earths can fit inside it.

sun's layers

• Starting in the center is the core.
• Next from the core is the radiation zone.
• Then the convection zone
• After the convection zone is the photosphere. This is the visible layer.
• The last layer is the corona and is a cloud of gas.

stars

• The Proxima is the closest star other than the sun.
• The Betelgeuse is a giant red star.
• The Rigel is a super giant.
• All stars seen without a telescope are in Milky Way Galaxy.
• Magnitude is the designation indicating the brightness of a star.
• One light year is 9.6 trillion km away.

constellations

• Betelgeuse a giant red star and Rigel a supergiant are both in Orion.
• Certain constellations are out at certain times of the year.
• Constellations are shapes that stars make.
• You could find your star sign in constellations.

Sirius

• Sirius is the dog star.
• It is 8.8 light years away.
• It is 30 times brighter than the sun.

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