How Far is Far?

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How Far is Far?
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(No Transcript)
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Earth to Moon Distance
Average of 238,000 Miles
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Sun to Earth Distance
1 Astronomical Unit (AU)
93,000,000 Miles
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Body AU Mercury .39 Venus
.72 Earth
1.0 Mars 1.5 Jupiter
5.2 Saturn 9.5 Uranus
19.2 Neptune 30.1 Pluto
39.5
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Solar System Model
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Parallax
Calculating Distance
Viewpoint A
Viewpoint B
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Parallax
Viewpoint A
Viewpoint B
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The Light-Year
186,000 miles/second
X 60 seconds/minute
X 60 minutes/hour
X 24 hours/day
X 365 days/year
5,865,696,000,000 miles/year
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Our Nearest Neighbors
5 Light-Years
4.2 Light-Years
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The Solar Neighborhood
Galactic Center
40,000 Light-Years
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The Size of Galaxies
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The Galactic Neighborhood
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Hubble Deep Field Image
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Questions?