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24 Cards in this Set
- Front
- Back
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What is the apparent shift of nearby stars relative to more distant stars as Earth orbits the sun?
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Parallax
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What is The study of the origin, structure, and future of the universe called?
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Cosmology
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What is a small, dim star that is leftover center of an old star?
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White Dwarf
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What is so massive that it's gravity doesn't even let light escape?
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Black Hole
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What is the magnitude of a star at how bright it would be at a distance of 32.6 light years from Earth?
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Absolute Magnitude
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What is a giant cloud of gas and dust?
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A Nebula
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What is a cool, star formed when a star runs out of hydrogen?
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Red Giant
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What is the magnitude of a star by how bright it looks?
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Apparent Magnitude
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What the explosive death of a star?
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Supernova
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What is a collection of stars, dust and gas bound together by gravity?
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Galaxy
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Which theory states the universe began with a tremendous explosion 13.7 billion years ago.
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Big Bang Theory
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What is a group of stars that are closer together to each other than surrounding stars ?
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Open Cluster
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The location on the HR diagram where most stars lie?
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Main Sequence
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A graph that shows the relationship between a star's surface temperature and it's absolute magnitude?
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Hr diagram
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What are the planets, the sun, and many moons and small bodies part of?
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Solar System
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Which elements are found in the gassesnof nebulas
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Hydrogen and Helium
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What two events can upset the balance between gravity and pressure in a nebula?
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Two nebulas collide of a nearby star explodes
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What is the cloud of gas and dust that formed our solar system?
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Solar Nebula
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When the solar nebula collapsed, what attraction happened to the particles?
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It increased
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When the center of the collapsed cloud of gas and dust it became..
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Very dense and hot
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What happened to the solar nebulas over time?
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It flattened into a rotating disk
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The largest of the colliding bodies in the solar system are known as war?
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Planetesimals.
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What did the largest planetesimals attract?
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Nebula gasses
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What happened when the gas in the nebulas center stopped collapsing?
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Our sun was born and the new solar system was complete
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