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Astronomy (2)
Question | Answer |
---|---|
What is the Big Bang Theory? | A widely accepted theory of how the universe was formed |
What is the evidence of the universe expanding? | Doppler Shift |
What was the widely accepted theory of how the solar system and stars were formed? | Solar Nebular Theory |
What is solar nebular? | Huge, vast clouds of ice, gas and dust |
What controls how a star evolves, lifespan and ultimate fate | Mass (size) |
What are the less massive stars in order | Nebula, protostar, main sequence star (born), supemova, and neutron star (death) |
What does the Hertzsprung - Russel diagram show? | The relationship between absolute magnitude in relation to their surface temperature |
What is a galaxy? | A collection of billions of stars |
What are black holes? | The end of the life cycle of some supergiant stars |
How far away is the nearest star? | 24 trillion miles away |
What is life-year? | The distance light travels in one year |