Astronomy 1210 -- April 25, 2012 (37)
Important Topics from Last Time
- Exam 3 results have been posted.
- The mean was 80, so the posted score will not be adjusted.
- Don't forget about the take-home wildcard followup on Collab
- Finish those Labs! They only run as long as classes do.
- Extra credit must be turned in by the last lecture - see the
lab information page
- The "constellation of the week" is Canis Minor - see also
Today's Key Topics
- The Cassini mission orbiting Saturn
- Saturn's rings and the Roche Limit
- Evidence for liquid water under the surface of Enceladus
- Icy satellite review
- Saturn's Moon Titan and its atmosphere
- Titan's surface - erosion and lakes. Evidence for "rainfall"
- Introduction to the Ice Giants
- Today: Cosmic Perspective Sections 11.2 and 11.3;
- Next Lecture: Sections 12.1 and 12.3
- Watch the waxing crescent Moon this week. image here.
- Jupiter is quickly getting lost in evening twilight while Venus continues to creep eastward amongst the background of stars, avoiding the Sun. Venus is in Taurus near the Pleiades and Hyades star clusters.
- Mars is prominent rising in the eastern sky in the early evening. Its red color is evident. Mars is in the constellation of Leo.
- Saturn is at opposition and rising as the Sun sets.
- Find Venus. The loop of stars above and to the "right" is the constellation Aurgia marked by the bright star Capella.
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Current location of the Wide Field Infrared Survey Explorer (WISE)