1. To explore the range of periods of binary star systems, locate on the Web binary star systems with periods of a. less than 1 week, b. between 1 day and 1 week, c. between 1 and 2 years, d. between 40 and 50 years; and e. more than 400 years.
2. Locate the stars Betelgeuse and Rigel in Orion. Observe them both by eye and through a small telescope. Are they the same color? To determine their color(s), it helps to compare them to their neighbors.
Already registered? Login
Not Account? Sign up
Enter your email address to reset your password
Back to Login? Click here