our place in the universe. order in terms of size telescope moon saturn sun star cluster milky way...
TRANSCRIPT
Our Place in the Universe
Order in Terms of Size
• Telescope• Moon• Saturn• Sun• Star Cluster• Milky Way Galaxy• Hubble Galaxies
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
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)
How do we fit in?
• Let’s start small
How do we fit in?
• Yorkville Middle School• Yorkville• Kendall County• Illinois• Midwest• United States• North America• Earth
How do we fit in?
• Now think larger– Earth– Solar System– Milky Way Galaxy– Universe
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
How close is the nearest star to us?• 4.3 Light years away
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
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
COSMOS CLIP!
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
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
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
In short…Our solar system
