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Objective 1: Compare the size and distance of objects within systems in the universe.
a. Use the speed of light as a measuring standard to describe the relative distances to objects in the universe (e.g., 4.4 light years to star Alpha Centauri; 0.00002 light years to the sun).
b. Compare distances between objects in the solar system.
c. Compare the size of the Solar System to the size of the Milky Way galaxy.
d. Compare the size of the Milky Way galaxy to the size of the known universe.
Astronomical Adventures – the Size of the Milky Way
Comparing Our Solar System With the Universe (SciBer Text)
How Far Across is the Milky Way?
If the Milky Way Were the Size of a Penny
Is There a Center to the Universe?
Light Speed Ahead! (SciBer Text)
Measuring the Size of the Universe
An Overview of the Solar System
Relative Size of the Solar System
Solar System Distances (SciBer Text)
A Solar System Scale Model Meta Page
The Unmuseum – The Speed of Light
Objective 2: Describe the appearance and apparent motion of groups of stars in the night sky relative to Earth and how various cultures have understood and used them.
a. Locate and identify stars that are grouped in patterns in the night sky.
b. Identify ways people have historically grouped stars in the night sky.
c. Recognize that stars in a constellation are not all the same distance from Earth.
d, Relate the seasonal change in the appearance of the night sky to Earth’s position.
e. Describe ways that familiar groups of stars may be used for navigation and calendars.
Appearances Can Be Deceiving (SciBer Text)
Connecting the Dots (SciBer Text)
Constellation Myths (SciBer Text)
The Constellations and Their Stars
Constellations – Frequently Asked Questions
The Deep Photographic Guide to the Constellations
Finding Your Way (SciBer Text)
How Far Are the Constellations?
Interactive Constellation Applet
Now You See Me, Now You Don't! (SciBer Text)
Stories of the Constellations