Renaissance scientist par excellance, Isaac Newton invented the first telescope to use mirrors, in addition to his renowned laws of gravity. It is the Laws of the Newtonian Universe that made manned space travel possible. Isaac Newton invented the reflecting telescope which consists of a primary mirror focusing a cone of light into a secondary mirror through which an image can be viewed at an eyepiece. A non-stellar body which orbits a star and shines from the light it reflects from that star. The weather on planets in our own solar system is visible from Earth based telescopes like Windowpane Observatory .
Planets have satellites or moons much like the Earth's moon.
They are also visible from Earth-based telescopes. The first person to see the brightest moons of Jupiter was Galileo. A short-focus telescope is a telescope whose focal ratio is small. A small focal ratio causes a reflecting telescope to be physically shorter that a long focus telescope. A shorter focal ratio means that objects are bigger and brighter when observed.