Earth Science - Patterns in the Night Sky

Explore the fascinating patterns of the night sky in this 23-minute lecture from Spahn's Science Lectures. Delve into the world of constellations and learn about diurnal motion, the North Star, and the movements of the celestial sphere. Discover how to make measurements using the celestial sphere, including angular measurements, angular sizes, and distances. Understand the small angle formula and its applications in astronomy. Learn about the apparent separation of objects in the sky, the visibility of constellations in different seasons, and the concept of arcseconds. Finally, explore the Sun's apparent path against the celestial sphere, known as the ecliptic.

Intro
PATTERNS IN THE NIGHT SKY
CONSTELLATIONS
DIURNAL MOTION
THE NORTH STAR
MOTIONS OF THE CELESTIAL SPHERE
MEASUREMENTS USING THE CELESTIAL SPHERE
ANGULAR MEASUREMENTS
ANGULAR SIZES AND DISTANCES
THE SMALL ANGLE FORMULA
The angle that appears to separate two objects in the sky is known as the
Orion is visible on winter evenings but not summer evenings because of
How many arcseconds are in 1°?
The apparent path of the Sun against the backdrop of the celestial sphere is called the