Our Modern View of the Universe with Dr. Tony...
Transcript of Our Modern View of the Universe with Dr. Tony...
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Our Modern View of the Universe
with Dr. Tony Crider
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Student Learning Objectives
• Define “AU” and “ly.”
• Watch Powers of Ten.
• Determine our address.
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galaxy staruniversesolar system
A
C
B
D
Which of these is the largest?
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1 AU =
1 ly =
1.495979 x 1011 m
9.46053 x 1015 m
average distance between the Earth and the Sun
distance that light travels in one year
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Proxima Centauri SunMoonPluto
A
C
B
D
Which of these is 4.2 light-years away?
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Proxima Centauri SunMoonPluto
A
C
B
D
Which of these is 1.3 light-seconds away?
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8 light-secondsA
C
B
D
How far away is the Sun?
8 light-minutes
8 light-hours 8 light-years
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What is our address?
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SOLAR SYSTEM
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SOLAR SYSTEM
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SOLAR SYSTEM
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GALAXY
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GALAXY
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GALAXY
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CLUSTER
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CLUSTER
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SUPERCLUSTER
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SUPERCLUSTER
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UNIVERSE
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Powersof
Ten
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14 thousand yearsA
C
B
D
How old is the Universe?14 hundred years
14 million years 14 billion years
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Student Learning Objectives
• Define “AU” and “ly.”
• Watch Powers of Ten.
• Determine our address.
![Page 24: Our Modern View of the Universe with Dr. Tony Criderfacstaff.elon.edu/acrider/classes/phy102/lectures/011...,á5.ooo , .15,000 120' 30,ÓOO 1500 1 BOO 3300 3000 2700 240' M 110 NGC](https://reader033.fdocuments.net/reader033/viewer/2022051905/5ff7ccb9b2d16b5d0d74b888/html5/thumbnails/24.jpg)
Lecture Notes: The Scale of the UniverseBad Astronomy: Star Naming for Dummies
MasteringAstronomy: Scale of the Universe