Ancient Astronomy Notes February 15, 2017 1.5 % Ancient Egyptian Astronomy video Hipparchus (2nd century B.C.) created star charts (850 stars) divided in 6 groups by brightness, determined length of the year (within minutes), and predicted lunar eclipses (within hours)
Ancient Astronomy Notes - Mr. Megrdichian (Mr. Mega)lhsmegrdichian.weebly.com/uploads/8/6/7/9/86794930/... · Ancient Astronomy Notes February 15, 2017 1.5 % Ancient Egyptian Astronomy
