moons, planets, solar system, stars, galaxies, in our ... planets, solar system, stars, galaxies, in...
TRANSCRIPT
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Moons, Planets, Solar System,
Stars, Galaxies, in our Universe -
An introduction by Rick Kang
Education/Public Outreach Coord. Oregon Astrophysics Outreach
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HIERARCHY: one within another
n Moons ORBIT Planets n Planets ORBIT Stars (Suns) n Stars orbited by Planets are Solar Systems (all Stars?) n Solar Systems form from Nebulas and recyle
back into Nebulas (dust & gas) n Nebulas and Solar Systems ORBIT within
Galaxies (huge Star Cities) n Many Galaxies fill our Universe
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Moons
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Our Solar System’s Planets
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Our Star (the Sun)
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Our Galaxy (Milky Way) edge-on from within the pancake
(STAR CITY)
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Stars: distant Suns – Birth, Life, Death (Nebulas, Clusters)
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Solar System Formation
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Recycling Stars
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Heavy Duty Recycling: SUPERNOVA – elements galore
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DRAWING of our Milky Way Galaxy
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Looking toward Cygnus and toward galactic center
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Reality Check:
n Visualize SOLAR SYSTEM vs. GALAXY
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Reality Check:
n Visualize SOLAR SYSTEM vs. GALAXY
n A Solar System is a VERY TINY DOT within a GALAXY…microscopic!
n A ¼” paper punchout vs. a huge disk about 150 MILES WIDE (Coast to Bend or Portland to Roseburg!)
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Our Sister Galaxy, Andromeda, M31
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Other Galaxies in Deep Space
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The HUBBLE ULTRA-DEEP FIELD a tiny swatch of sky-galaxies galore
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Hundreds of Billions of GALAXIES in our UNIVERSE n We don’t have enough data to figure
out where we are within the UNIVERSE nor how big our Universe might be…evidence is it’s expanding!
n We are a member of a cluster and a supercluster of galaxies. How do we know that?
n If you leave from a place, how far could you travel in a given amount of time? How old is our Universe, how would that relate to its size?