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Astronomy (2)

QuestionAnswer
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
Created by: hcps-carmonjkj
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