1. What prevents thermonuclear reactions from occurring at the center of a white dwarf? If no thermonuclear reactions take place in its core, why doesn’t the star collapse?
2. Suppose you wanted to determine the age of a planetary nebula. What observations would you make, and how would you use the resulting data?
Already registered? Login
Not Account? Sign up
Enter your email address to reset your password
Back to Login? Click here