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Astronomy

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QuestionAnswer
How old is the Universe estimated? 13.8 billion years old
What are the 3 types of galaxies? Spiral, Elliptical, irregular
What is in the center of a Galaxy? A lack hole
What the first stage of a Star? A nebula
What are the 2 main elements in the Milky Way? Hydrogen and Helium
What is the stage after a ? Proto Star
What is the stage after a Protostar? Main Sequence
What allows star to give off light and heat? Nuclear Fusion
What is the next stage if the sun in our solar system? Red Giant
Sense our sun is the average star what is its final stage? Black Dwarf
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