How did Kepler develop his second law of motion?(1 point)
Responses
He invented a telescope that was strong enough to view all planets of the solar system along their orbits.
He used a telescope to carefully follow and time the orbital motion of Mars.
He made accurate measurements of the positions of all the planets over many years.
He compared data of planetary motion at different times along orbits.
1 answer
He used a telescope to carefully follow and time the orbital motion of Mars.