1. Wednesday October 3, 2012 (Video – HTUW: Alien Galaxy Parts 6 & 7; Our Solar System)

2. The Launch Pad 10/3/12 Draw a picture of the Sun and the eight planets to scale.

3. Announcements

4. Assignment Currently Open Summative or Formative? Date IssuedDate Due Date Into GradeSpeed Final Day Quiz 4S49/21 10/5 Project – Stellar Modeling F89/2610/2 Quiz 5S59/28 10/12

5. Recent Events in Science Sigma 7: Wally Schirra's Mercury Flight http://www.nasa.gov/externalflash/schirra50/ Read All About It! 50 years ago, Wally Schirra became the fifth American in space, making the third orbital flight of the Mercury program. Schirra piloted his Sigma 7 capsule on a six-orbit mission that lasted more than nine hours on Oct. 3, 1962.

6. Video How the Universe Works: Alien Galaxy Part 6- Fate of the Milky Way Galaxy (29:31 – 35:50)

7. An Overview of the Solar System Our Solar System includes: the Sun eight planets (formerly nine) moons of planets many asteroids many comets many meteoroids

8. Our Solar System Figure 22.1

9. Our Solar System

10. The planets drawn to scale

11. Orbital Plane of the Planets

12. Plane of the Ecliptic

13. Jovian or Jupiter-like planets (not to scale) Terrestrial or Earth-like planets (not to scale)

14. The Solar System to Scale

15. Video How the Universe Works Alien Galaxy Part 7 - Dark Energy (35:51 – 42:11)