Astronomy 1210 -- March 23, 2012 (24)
Important Topics from Last Time
- Exam 2 results are on collab
- Exam 3 review questions are available
- The "constellation of the week" is Ursa Major - see also
- The Spring Equinox was just a couple of days ago. There's still time to stand your eggs on end - or you can read this article by a prominent UVa alumnus.
Today's Key Topics
- The Age of the Earth
- Searching for other solar systems
- Radial Velocity and Planetary Transit searches
- Earth-sized vs. earth-like planets
- Direct detection of other planets
- Searching for other Earths
- Today: Cosmic Perspective Next Lecture: Continue in Chapter 13; Forming Jovian Planets
- Next Lecture: Sections 9.1-9.3
- The Moon was new yesterday. It will begin its new cycle of phases in the Western evening sky tonight.
- Tonight it will be the thinnest sliver of cresent lost in the evening twilight. Sunday night it will be close to Jupiter (and Venus).
- 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.
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National Weather Service Current Forecast
Current location of the Wide Field Infrared Survey Explorer (WISE)