AAVSO Spectroscopy Workshop, Day1 (2020)
4:57:29
AAVSO Spectroscopy Workshop, Day2 (2020)
2:11:25
Backyard astronomical spectroscopy with Bob Buchheim & Scott Donnell
2:40:55
How To: Introductory Photometry
1:54:02
Chopin: Nocturnos Completos (Interpretados por Luke Faulkner) 2 Horas
1:20:25
28 Most Famous of Classical Masterpieces You Need to Hear Once in Your Lifetime
11:24
Germany Math Olympiad | A Very Nice Geometry Problem
1:29:50
Meet the AAVSO's Spectroscopy, HEN, and PEP Sections
1:32:03