This introductory course explains how Earth’s motions shape seasons and the apparent movement of the Sun, Moon, and stars. It also introduces the celestial sphere, celestial coordinates, constellations, zodiac signs, and Milankovitch cycles.

Syllabus

Astronomy - Ch. 2: Understanding the Night Sky (1 of 23) The Motions of Earth
Astronomy - Ch. 2: Understanding the Night Sky (2 of 23) What is the Ecliptic Plane?
Astronomy - Ch. 2: Understanding the Night Sky (3 of 23) Why Do We Have Seasons?
Astronomy - Ch. 2: Understanding the Night Sky (4 of 23) What Are Solstice and Equinox?
Astronomy - Ch. 2: Understanding the Night Sky (5 of 23) Understanding the Celestial Sphere
Astronomy - Ch. 2: Understanding the Night Sky (6 of 23) Motion of Stars, Earth, Sun, Moon
Astronomy - Ch. 2: Understanding the Night Sky (7 of 23) Understanding Earth's Longitude & Latitude
Astronomy - Ch. 2: Understanding the Night Sky (8 of 23) Understanding Celestial Coordinates
Astronomy - Ch. 2: Understanding the Night Sky (9 of 23) How to Find and Identify "Stars"
Astronomy - Ch. 2: Understanding the Night Sky (10 of 23) The Constellations
Astronomy - Ch. 2: Understanding the Night Sky (11 of 23) How to Find the Zodiacs
Astronomy - Ch. 2: Understanding the Night Sky (12 of 23) How to Find the Popular Constellations
Astronomy - Ch. 2: Understanding the Night Sky (13 of 23) Why Do We Have Seasons?
Astronomy - Ch. 2: Understanding the Night Sky (14 of 23) Why Do We Have Seasons?
Astronomy - Ch. 2: Understanding the Night Sky (15 of 23) Why Does the North Star Change?
Astronomy - Ch. 2: Understanding the Night Sky (16 of 23) High Noon at the North Pole
Astronomy - Ch. 2: Understanding the Night Sky (17 of 23) Earth's Elliptical Orbit and Earth's Temp
Astronomy - Ch. 2: Understanding the Night Sky (18 of 23) Solar Day vs Sideral Day
Astronomy - Ch. 2: Understanding the Night Sky (19 of 23) Tropical Year vs Sidereal Year
Astronomy - Ch. 2: Understanding the Night Sky (20 of 23) The Sun and Earth's Temperature
Astronomy - Ch. 2: Understanding the Night Sky (21 of 23) Earth's Temperature 12,000 Years Later
Astronomy - Ch. 2: Understanding the Night Sky (22 of 23) What Are The Milankovitch Cycles?
Astronomy - Ch. 2: Understanding the Night Sky (23 of 23) How Milankovitch Cycles Affect Weather
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