ASTR 220 Collisions in Space

Fall 2004

Course Syllabus

You may contact Dr. Hayes-Gehrke at or x5-5099.

You may contact Ms. Brenneman at or x5-2693.

ASTR 220 Fall 2004 course grades have been submitted (as of 11:30am Wednesday). I don't know how long it will take the grades to get through the system. You can check your grades at

You can make an appointment with me to stop by and see your final exam and pick up your last homework. I will be available the afternoons of Dec. 15 and 16, and the morning of Dec. 17. I will also be available intermittently next week. Send me an email (address above). I can't email your grades, but if you call me I can give them to you over the phone.

Enjoy the winter break.

-- Dr. Hayes-Gehrke


  • Homework 1, due Thursday, September 9, 2004
  • Homework 1 solutions
  • Homework 2, due Tuesday, September 21, 2004.
  • Homework 2 solutions.
  • Homework 3, due Tuesday, October 5, 2004.
  • Homework 3 solutions.
  • Homework 4, due Thursday, October 21, 2004.
  • Homework 4 solutions.
  • Homework 5, due Thursday, October 28, 2004.
  • Homework 5 solutions.
  • Homework 6, due Thursday, November 4, 2004.
  • Homework 6 solutions.
  • Homework 7, due Thursday, November 18, 2004.
  • Homework 7 solutions.
  • Homework 8, due Tuesday, November 30, 2004. Gal Crash simulator.
  • Homework 8 Solutions.
  • Homework 9, due Thursday, December 9, 2004.
  • Homework 9 Solutions.
    Solutions to class discussion of Night Comes to the Cretaceous.

    Solutions to the first midterm.

    Solutions to the second midterm.

    Links to some reviews of scientific notation:

    Some Interesting Astronomy Links

    General Astronomy

    Spacecraft Missions


    Earth Impact Hazards

    The image in the background of this page was taken by Debra Meloy Elmegreen and colleges at Vassar College and the Hubble Heritage Team at the Space Telescope Science Institute.
    The material on these webpages is Copyright © 2004 by Melissa N. Hayes-Gehrke and may not be reproduced without my permission.