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Astronomy (2)

Astronomy

QuestionAnswer
What is the Big Bang Theory ? A widely accepted theroy foe how the universe formed.
What is a Solar Nebula ? is huge, vastclouds of ice, gas and dust
What are galaxies ? A collection of billions of stars.
What are black holes ? They are the end of the life cycle of some supergiant stars.
Is Light-Year the distance light travels in one year? True or False True
Our system is part of the Milky Way? Yes
What is the Solar Nebular theory ? It is most widely accepted theory on how solar system and stars form.
Which two planets don't have moons? Mercury and Venus
What is the sun mostly made up of ? hydrogen and helium
Why does the moon have phases ? Because of the reflected sunlight and the angle at which shadow falls on eart.
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