Precession and Nutation |
Barycenter & Orbits |
The Earth doesn't just spin; it wobbles as it spins. Watch the first five minutes of the video below to learn about what precession and nutation are and what causes them.
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It turns out that the Moon doesn't orbit the center of the Earth but rather the center of the mass of the Earth-Moon system (and so does the Earth). The center of mass of two gravitationally bound bodies is known as the BARYCENTER. Watch the video below to learn more about how barycenter works.
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Earth's Path Through the Universe
Our sun is one of many stars in the Milky Way Galaxy. Watch the video below to see where the sun is located within the Milky Way. Understand that the stars in the Milky Way move around the center of the Milky Way somewhat like planets in our solar system move around the sun.
Games
Barycenter Game https://spaceplace.nasa.gov/barycenter/en/
Quizlet Precession quizlet.com/120095065/precession-flash-cards/
Quizlet Precession quizlet.com/120095065/precession-flash-cards/