The Crab Nebula, a six-light-year-wide expanding remnant of a star's supernova explosion.
The orange filaments are the tattered remains of the star and consist mostly of hydrogen. The rapidly spinning neutron star embedded in the center of the nebula is the dynamo powering the nebula's eerie interior bluish glow.
Blue in the filaments in the outer part of the nebula represents neutral oxygen, green is singly-ionized sulfur, and red indicates doubly-ionized oxygen.
Credit: NASA, ESA, J. Hester and A. Loll (Arizona State University)
Greetings to students in ASTR1010-004 (MW 7:35-8:50 PM) from the instructor, Nancy Morrison.
This page is intended to provide a backup copy of the materials displayed in lecture and of the syllabus, announcements relevant to the class, and access to the wealth of astronomical information on the World Wide Web. It is not intended as a substitute for regular class attendance.
Observing sessions at Brooks Observatory for Astronomy 1010 have been completed for fall 2010.
Observing was held successfully on:
- January 28, 2010
- February 23, 2010
- March 23, 2010
- April 19, 2010
- April 23, 2010
- April 26, 2010
- April 27, 2010
- April 28, 2010
- April 29, 2010
Extra Credit Assignment 8 is now on line. It will be due Wednesday, May 5 at 7:30 PM. After the due date, you can still work on it, but you won't get credit for it.
The first time you visit, click New Students.
On the next screen that appears:
- If you bought Mastering Astronomy with your textbook, click Yes, I have an access code. You will find the access code behind a pull tab inside the Mastering Astronomy packet.
- To purchase access on-line, click, No, I do not have an access code.
- You will be taken to a screen that will ask you to designate your textbook. Scroll to the right and select, Bennett/Donahue/Schneider/Voit, The Essential Cosmic Perspective, 5e
- Proceed with the on-line purchase at a cost of $35.00.
- When requested, provide the course ID MAMORRISON04703
About the assignments:
You may wish to work the non-credit introductory exercise first. It is provided by the publisher and is designed to acquaint you with the software.
- They will consist mainly of multiple-choice questions similar to what you will see on the tests.
- The material is from the current week's classes.
- The total extra credit available for the semester will be about enough to raise your grade by a +/-- sign if you are in the A-C range.
Latest update: May 3, 2010 16:00
Answer keys for quizzes - all are now posted. The quizzes themselves are posted here.
Materials displayed in lecture will be placed here before each class - subject to revision - and then updated after each class if needed. Each is a PDF file that contains links to images displayed; separate links to the web images are also provided. The most recent material is first.
WMAP's microwave sky after 7 years' oberving ... time line of the universe
Large-scale structure ... Hubble Ultra Deep Field ... extremely distant galaxy discovered in the Hubble Ultra Deep Field ... Edge-on spiral galaxy ... white dwarf supernova in nearby galaxy ... map of cosmic micrwave background
For images not on Web, see the PDF.
April 14, 2010 - post-class version, 347 KB - review and sample multiple-choice questions
March 17, 2010 - post-class version, 226 KB - finish material on Jovian planets, then review as time permits, then Quiz 4
February 24, 2010 - post-class version, 509 KB. Inlcludes review questions, not used. We finished the material on formation and age of the solar system, then reviewed, then held quiz 3. Allende, a primitive meteorite (scroll about halfway down to see image)
January 27, 2010 - Test 1 scheduled 8:25 PM. One new animation, then review.
On Quiz 3, the correct answer to the question reading, "In general, the farther from the Sun a planet is, the ______________
it is found to be" is "(e), more than one of these." The answer given in the answer key was (d), which is the correct answer to a different question. I edited this question but forgot to change the answer key.
Notes added March 3, 2010, 01:14
- Quiz scores have now been corrected in my records.
- Students who took the "not" version of the quiz were graded correctly; that answer key is correct.
I apologize for this error, and I will correct the grade of everyone affected. It is not necessary to email me about it, and it is not necessary to correct it in your test corrections if you answered (e). If you submit test corrections, when I reply I will confirm that I have amended your score.