What challenges did Johannes Kepler face making the telescope ?

Throughout his life, Johannes Kepler experienced many trials. When he was young, he was a sickly child, and his parents were poor. Also, when he began to devote his life to science and astronomy, his studies and his religion clashed.

Explanation:

Kepler used simple mathematics to formulate three laws of planetary motion. Kepler's First Law stated that planets move in elliptical paths around the Sun. He also discovered that planets move proportionally faster in their orbits when they are closer to the Sun; this became Kepler's Second Law.

a case involving the laws of a single state.