telescope: The telescope is an instrument that makes distant objects appear larger and closer. There are also special telescopes that magnify radio waves, infrared waves, ultraviolet light, and other kinds of invisible radiation.
tidal effect: Planets and moons are kept in their orbits by the gravitational pull of the object they are orbiting. The pull also causes the moon to bulge on the side facing the planet. As the moon rotates, it is pulled and stretched on one side and then the other. This causes the moon to repeatedly stretch and bulge. This stretching and bulging due to
