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Astronomy 2.

Question and Answer

QuestionAnswer
What do blue giants fuse to form helium 4? Hydrogen
What are Galaxies? Collections of billions of stars
What are black holes? The end of the life cycle of some super giant stars
What is a Light-Year? The distance light travels in one year
What is the most widely accepted theory for how the universe formed? Big Bang Theory
What is a Solar Nebula? Are huge,vast clouds of ice, gas and dust
What shows the relationship between absolute magnitude to their surface temperatures? The Hertzsprung-Russell or (H-R)
What is our sun's lifespan ? 12 billion years
Name four outer planets. Jupiter, Saturn, Uranus and Neptune
Name four inner planets. Mercury, Venus, Earth and Mars
Created by: MCisse10
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