Watch ASTR 1010 for an open seat Free
4 of 12 sections full. Easiest-graded first; filter by day, time or instructor.
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8 of 12 sections have open seats (257 seats) as of 3 hours ago. Taught by Fabien R. Baron, Petrus C. Martens, Christopher (Bayard) B. Stringer and others.
Get it on your phone too: the iPhone app adds instant push alerts.