1 ene 1609 año - Keplers first 2 laws of planetary motion
Descripción:
His first law was that every planet´s orbit is an ellipse with the sun at a focus. his second law was that a line joining the sun and a planet sweeps out equal areas at equal times.Añadido al timeline:
fecha:
1 ene 1609 año
Ahora mismo
~ 417 years ago