ASTR 220 - Collisions in Space

Homework 3 (12 points)
Due Thursday November 4 at the beginning of class

  1. Describe what will happen to the Earth as the Sun evolves into a red giant star.

  2. How does the evolution of a massive star (20 solar masses) differ from the evolution of our Sun? Describe and account for the differences.

  3. Astronomers believe that they have detected several good black hole candidates. How can this be possible if black holes emit no light? Describe.

  4. Given the following information for a star answer each question and give reasons behind your answers: