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