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7 Cards in this Set
- Front
- Back
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Where is our solar system located
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In between the middle of the edge.
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How does hydrogen radiation allow astronomers to map out the entire Milky Way galaxy?
What pattern does it indicate? |
Contains protons and electrons that act as magnets and move in parallel or oppsite directions to cause a spiral looking galaxy.
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How do we know there is a supermassive black hole in the center o the universe? What is its size?
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Through radio observations.
1 AU |
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What is a Rotation curve for a galaxy ?
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A graph that shows speed of material in a galaxy
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Where is the most of the mass of the solar system concentrated?
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The sun contains over 99% of the mass
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Where is most of the mass in the Milky Way galaxy concentrated?
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At the galaxies visible disk
90% of our galaxies mass has yet to be discovered |
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What is the nature of the mass that makes up most of the Milky Way Galaxy?
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Dark matter.
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