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Astronomy Part 7
Astronomy Part 2
Question | Answer |
---|---|
What are black holes? | The end of the life cycle on super giant stars. |
What are galaxies? | Galaxies are a collection of stars. |
What types of galaxies are there? | The basic types are spiral, elliptical and irregular. |
What is the most widely accepted theory for how the universe formed? | The Big Bang Theory |
What is the most widely accepted theory for how the solar system and stars formed? | Solar Nebular Theory |
How do stars form? | Condensation, gravitational compression of this nebula. |
What is Solar Nebula? | huge, vast clouds of ice, gas and dust. |
Less massive stars in order. | 1. Nebula, 2. protostar, 3 main sequence star (born), 4. white dwarf, 5. black dwarf (death) |
More massive stars in order. | 1. Nebula, 2. protostar, 3 main sequence star (born), 4. supernova, 5. neutron star (death). |
After supernova what do most massive stars become? | Black holes. |