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Lecture 2

Lecture 2 - Where are we in the universe - September 12.docx

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Department
Astronomy & Astrophysics
Course
AST101H1
Professor
Michael Reid
Semester
Fall

Description
September 12, 2013. Lecture 2 – Where are we in the universe? Learning Goals for this Section  State the full “cosmic address” of Earth  Correctly use the terms planet, dwarf planet, etc..  Etc. Our “Cosmic Address”  Earth < Sol System < Milky Way Galaxy < Local Group < Universe o Our planet < Our solar system < Many solar systems orbiting a common centre < A group of galaxies close to each other < EVERYTHING IN EXISTENCE  However big you imagine space to be, you are wrong o Jupiter is about 10 times the size of Earth, the Sun is about 10 times the size of
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