Astronomy
Course Description
Humans have long gazed toward the heavens, searching to put meaning and order to the universe around them. Although the movement of constellations — patterns imprinted on the night sky — were the easiest to track, other celestial events such as eclipses and the motion of planets were also charted and predicted. Astronomical observations are part of virtually every culture and include events that anyone who watches the sky can see.
Definition of astronomy: Astronomy is the study of the sun, moon, stars, planets, comets, gas, galaxies, gas, dust and other non-Earthly bodies and phenomena. NASA defines astronomy as simple "the study of stars, planets and space."
Historically, astronomy has focused on observations of heavenly bodies. It is a close cousin to astrophysics. Briefly put, astrophysics involves the study of the physics of astronomy and concentrates on the behavior, properties and motion of objects out there. However, modern astronomy includes many elements of the motions and characteristics of these bodies, and the two terms are often used interchangeably today.
https://www.youtube.com/watch?v=0rHUDWjR5gg&list=PL8dPuuaLjXtPAJr1ysd5yGIyiSFuh0mIL
https://www.nasa.gov/stem/forstudents/9-12/index.html#.U_ORdMVdWSo
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