TIA The Universe and Planets

What is the largest moon in the solar system and one of the few with an atmosphere similar to Earth's?

How many moons does Mars have and what are their names?

How many moons does Jupiter have and what are the names of the four largest moons?

What are comets and how do they become visible?

What are asteroids and meteors, and how are they different?

What are black holes and quasars, and how do they differ?

How are black holes formed?

What are space probes and what is their purpose?

Who was Giovanni Domenico Cassini and what did he observe about Saturn?

Who was Nicolaus Copernicus and what was his contribution to astronomy?