What is the scientific name for somebody who mends clocks and watches?

Which star is known as red planet? Why do scientists think that Miranda a moon of Uranuswas once broken apart by a collision with another large body? Why do bottle rockets have a pointy end on it? What is the fastest rotating body in the solar system? Light bending media of the eye? When can we see rainbow? What impact does the moon revolution have on Earth's tides and gravitational forces? The interstellar clouds called molecular clouds are? How many sentient species in the Andromeda galaxy? What if the moon were farther from the earth? What are some interesting moon questions that you have come across recently? Does the sun have space probes? How are solstices and equinoxes different from each other? How do you moon bathe? Which materials and colors heat the fastest in the sun? When was In the Ceiling the Stars Are Shining created? Who invented a magnifying hand lens? When was Solar System - song - created? Is there leaving things in other planets? What planet has an atmosphere with a greenhouse effect?