Transcript Document

Welcome To…..
The Trick is to Pick!
THE SUN
Sun vs. Earth
Answers
A. 109 times smaller
B. The Earth Stress Ball
Over 1 million Earths would fit inside the Sun
The average distance from the earth to the sun is called an
Astronomical Unit (AU)

1 AU = 150,000,000 kilometers or 93 million miles
THE SOLAR SYSTEM
The Solar System
Answers
A. Scotch Tape Roll
B. a grain of salt
C. a microscopic bacteria
8 planets  Mercury, Venus, Earth, Mars,
Jupiter, Saturn, Uranus, Neptune
The Solar Neighborhood
A grouping of stars “close” to each other
The region of the Galaxy within 32.6 lightyears of the sun
Here stars move generally with the sun in its
orbit around the center of the galaxy
The Solar Neighborhood
The Solar Neighborhood
Answer
A. a grain of salt
The Milky Way
The Milky Way Galaxy
Answers
A. Nickel
It takes 250 million years for the Sun to complete
one orbit
We are located at the edge of a spiral arm (30,000
light years away from center)
The Local Group
Contains 3 large spiral galaxies -->
Milky Way, Andromeda, and Triangulum
Also includes a few dozen dwarf galaxies
Gravitationally bound together, orbiting
around a common center of mass
6.5 million light years in diameter
The Local Group
Answer
A. The big Globe
Local Supercluster
A cluster of many groups of galaxies
Gravitationally bound together
However, local supercluster is getting
bigger with time
It has a flattened shape
The Local Super Cluster
Local Supercluster
Answers
A. a small globe
B. a quarter
The Entire Universe
Observable Universe is 156 billion light
years in diameter
Around 100 billion galaxies
Big and expanding
The Entire Universe
Answers
A. A dime
B. A grain of salt
Sun Vs. Pluto
A. 669 times
B. Nickle