👤 whose
Whose law explains why the solar system's planets speed up when they are closer to the Sun and slow down when farther away?
Quick Answer
That is Kepler's second law, again from Johannes Kepler. It says a line from a planet to the Sun sweeps out equal areas in equal times.
The Full Story
Johannes Kepler's second law describes how planets move faster when near the Sun and slower when farther away. The law follows from the changing distance in an elliptical orbit, and it is essential to accurate planetary predictions. Kepler published it in the early 17th century after analyzing Tycho Brahe's observations. It remains a cornerstone of orbital mechanics.
Key Facts
1.Kepler's second law was published in 1609
2.Planets move faster near perihelion
3.The law uses equal areas in equal times
YouTube Angle
Suggested video title for this topic:
"Why do planets race near the Sun? Kepler figured it out 400 years ago."
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