Astronomy 1210 -- March 21, 2012 (23)
Important Topics from Last Time
- Spring arrived this morning at
- Exam 2 results should be available shortly after class today.
- Exam 3 review questions are available
- Watch a Wallops Island rocket experiment sometime... -- also
- The "constellation of the week" is Ursa Major - see also
Today's Key Topics
- Evidence for solar systems forming elsewhere
- Radioactive dating and the age of our Solar System
- Half lives and radioactive decay.
- The Age of the Earth
- Searching for other solar systems
- Radial Velocity and Planetary Transit searches
- Jupiter and Venus are now moving apart. If you've been watching, Venus is almost stationary with respect to the horizon at sunset while Jupiter sinks lower in the west each day heading for conjunction in a couple of months.
- The Moon is now a waning crescent visible against a dark sky only in the early morning before dawn.
- Look for the Big Dipper (part of Ursa Major) rising in the Northeast early in the evening and high overhead in the middle of the night.
Home - Notes - A - APOD - BA - SN - SW - ST - I - S - T - W - B
National Weather Service Current Forecast
Current location of the Wide Field Infrared Survey Explorer (WISE)