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Stars and Universe

Astronomy: ES.13 a,b

TermDefinition
What is the Big Bang Theory? The most widely accepted theory for how the universe formed.
How do stars form? By condensation and gravitational compression.
What is a galaxy? A collection of billions of stars.
Black holes in the middle of galaxies allow The stars to gain ________ as they move toward the black hole. Velocity
Distances in our universe are measured in what? Light years
What are black holes? The end of the life cycle of some supergiant stars.
Blue giant stars put out about ________ times as much energy as the sun. 10,000
What is a Solar Nebula? A huge, vast cloud of ice, gas, and dust
What is a Light-year? The distance light travels in one year.
What is the Hertzsprung-Russel (H-R) diagram? The diagram that shows the relationship between absolute magnitude in relation to their surface temperatures.
Created by: yazmined
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