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Investigating the Universe
Exploration One: The Vast Universe
First Thoughts: Looking at a Tiny Piece of the Sky
Exploration Two: Measuring Distances in the Universe
Activity 3: Measuring Parallax of Stars in Images
Data Center: Parallax
Exploration Three: Measuring Distances with Standard Candles
First Thoughts: Estimating Distance by Comparing Brightness
Activity 3: Measuring Distance Using Cepheids
Data Center: Cepheid Variables
Activity 4: Measuring Cosmological Distances Using Type la Supernovae
Data Center: Type la Supernovae
Exploration Four: Measuring the Age of the Universe
Activity 3: Measuring Redshift of Spectra from Galaxies
Data Center: Redshift
Challenge: Measuring the Size and Age of the Universe
Data Center: Investigating the Universe Challenge Area
Doing Science
Extending Your Work
Recommended Resources
Lonely Hearts of the Cosmos: The Story of the Scientific Quest for the Secret of the Universe by Dennis Overbye (Back Bay Book, ISBN-10: 0316648965, ISBN-13: 978-0316648967)�a book about the people who have contributed to our understanding about the nature of the universe
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