chapter 01 2008 (PPTminimizer)

chapter 01 2008 (PPTminimizer) - Introduction to Astronomy...

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Introduction to Astronomy Introduction to Astronomy
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Modern View Modern View Lecture Objectives Lecture Objectives 1. Describe our cosmic origins and why we say that we are “star stuff.” 2. Define a light-year. 3. Why does looking into space mean looking back in time? 4. If the age of the Universe were crammed into a calendar year, how long have modern humans been here? 5. What does it mean to say that one thing is some number “ x” powers of ten larger than another?
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Describe our cosmic origins and why we say that we are “star stuff.”
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Star Stuff Star Stuff Every hydrogen atom in your body was created during the Big Bang. These atoms are as old as our Universe! All other atoms (carbon, iron, calcium, etc.) were created by stars . When stars die, they send these heavier atoms out into the universe to become other stars, planets, moons, living organisms. .. “We are all made out of star stuff.” ~ Carl Sagan
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The universe is the machinery that created YOU!
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You are part of the Universe! You are part of the Universe! Universe You You We are a part of the Universe that is wondering about itself! Its history story is our story too!
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Why does looking into space
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This note was uploaded on 04/22/2010 for the course BUS 255 taught by Professor Mcgee during the Spring '10 term at Aarhus Universitet.

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chapter 01 2008 (PPTminimizer) - Introduction to Astronomy...

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