Astronomy 1210 -- February 17, 2012 (13)
Important Topics from Last Time
- McCormick Observatory is open to the public 7 p.m.-9 p.m. tonight.
- Exam 1 results are available via collab.
- The median was 80 so no adjustment is required.
- Answers are posted on the Exams web page.
- Exam 2 Preview questions are available.
- The "constellation of the week" is Pegasus - see also
Today's Key Topics
- Galileo's telescopic discoveries
- Newton's laws of motion
- Action/Reaction and Rocketry
- Newton's Law of Gravitation
- Getting quantitative with orbital equations
- Why different mass objects fall at the same rate
- Today: Cosmic Perspective Sections 4.1, 4.2, and 4.4
- The Moon is a thin waning crescent in the pre-dawn sky.
- It will be visible for only an hour or so prior to sunrise - less with each subsequent day.
- It's up in the daytime sky most of the day, setting a couple of hours before the Sun, but difficult to see because it is lost in the Sun's glare.
- Look for Venus in the western evening sky (you can't miss it) and Jupiter high overhead in the early evening.
- Pegasus is low in the northwest off to the "right" of Venus. It's defined by four equally bright stars defining an large empty square, the "Great Square of Pegasus."
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