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Published byJustin Phelps Modified over 9 years ago
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1 Our Place in Our Galaxy
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2 What’s the Difference? Universe Galaxy Image credits: NASA, STScI Solar System
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3 What’s the Difference? Universe Galaxy Solar System
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4 Where is our Solar System? Visible stars, gas, dust in the Milky Way Galaxy Image credits: NASA, STScI Solar System here
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5 Solar System
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6 How big is the Milky Way Galaxy? 100,000 light years Image credits: NASA, STScI
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7 How far is 100,000 light years? 1 inch represents 5.5 light hours (Sun to Pluto) 1 mile represents 40 light years 2,500 miles represents 100,000 light years
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8 2,500 miles Continent of North America!
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10 And how thick is our Galaxy? Credit: NASA, COsmic Background Explorer (COBE) Project ~1000 light years
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11 How thick is 1,000 light years? If 2,500 miles represents 100,000 light years 25 miles represents 1,000 light years
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12 200 BILLION Stars!!!
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13 Fill with bird seed 4 feet deep on a football field 200 BILLION Stars!!!
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14 2,500 miles Spread them over the continent 25 miles deep!
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