Ellipse

The video tutorial explains the concept of an ellipse, describing it as a stretched circle or oval. It highlights the historical discovery of elliptical orbits by Johannes Kepler, based on Tycho Brahe's observations. The tutorial discusses the moon's elliptical orbit, explaining how it leads to varying distances from Earth, known as apogee and perigee. These variations affect the moon's apparent size and Earth's tides, with stronger gravitational pull at perigee causing higher tides. The video concludes with a thought experiment on how a circular orbit would impact tides.

What new insight or understanding did you gain from this video?