our place in the universe. order in terms of size telescope moon saturn sun star cluster milky way...
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Our Place in the Universe
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Order in Terms of Size
• Telescope• Moon• Saturn• Sun• Star Cluster• Milky Way Galaxy• Hubble Galaxies
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Order in Terms of Distance from Earth
• Telescope (350 miles above)• Moon (250 thousand miles)• Sun (93 million miles)• Saturn (790 million miles)• Star Cluster (2400 Trillian miles)• Milky Way Galaxy • Hubble Galaxies
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Order in Terms of Age
• Telescope• Star Clusters (80 million years)• Moon (4.5 billion years)• Saturn (4.5 billion years)• Sun (4.5 billion years)• Milky Way Galaxy (10 billion years)• Hubble Galaxies (10 + billion years)
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How do we fit in?
• Let’s start small
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How do we fit in?
• Yorkville Middle School• Yorkville• Kendall County• Illinois• Midwest• United States• North America• Earth
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How do we fit in?
• Now think larger– Earth– Solar System– Milky Way Galaxy– Universe
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How big is our solar system?
• Earth to the Sun– 93 million miles
• Sun to Pluto– 3.67 BILLION miles– The radius
• Diameter of the entire solar system– 7.33 BILLION miles
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How close is the nearest star to us?• 4.3 Light years away
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Milky Way Galaxy• Spiral Galaxy• Center with 2 major arms– We are part of “Orion’s Arm”
• 100,000 Light Years Across– Light Year = Distance light travels in one year= 5.88
Trillion Miles– How fast does light move?• 300 million meters per second
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Our Universe
• Contains multiple galaxies–Nearest galaxy is Andromeda • 2.5 million Light Years away
• 14 Billion Light Years Across• Contains stars, planets, moons, galaxies,
black holes, comets, asteroids, meteors
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COSMOS CLIP!
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History of the UniverseJANUARY FEBRUARY MARCH APRIL
Big Bang – Jan 1st
1st Stars – Jan 10th
1st Galaxy – Jan 13th
Origin of the Milky Way
Galaxy – March 15th
MAY JUNE JULY AUGUSTSun is Born – Aug 31st
SEPTEMBER OCTOBER NOVEMBER DECEMBERFormation of the
Solar System
Formation of Earth
Life Began – Sept 21st
Life was breathing and responding –
Nov 9th
Life became more diverse – Dec 17th
Insects, dinosaurs, birds, flowers – Last week of Dec
Humans Evolved – Last Hour Dec 31st
All of recorded history – Last 14 Seconds
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What holds it all together?
• Gravity–A force that pulls two objects together–Holds the planets in orbit around the sun–Holds the moon in orbit around Earth–Keeps you on the ground–Causes objects to fall
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Why is our Earth perfectly round?
• Objects larger than 1,000 km have enough gravity to pull themselves into a sphere
• All of the mass pulls on the other mass and makes a sphere
• All planets are a sphere for this reason• Larger asteroids are sphere for this reason• Smaller asteroids are randomly shaped
because they don’t have enough gravity
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In short…Our solar system