Galileo did not use a telescope to look at the four things that are typically associated with him, because he did not invent the telescope. The telescope had already been invented in the Netherlands around 1608.

Galileo improved the telescope and used it to make groundbreaking discoveries about the universe:

1. The Moon's Surface: He observed that the Moon was not a smooth, perfect sphere, but had mountains, craters, and valleys, just like Earth.

2. The Milky Way: He saw that the Milky Way was not a hazy, luminous cloud, but was made up of countless stars.

3. Jupiter's Moons: He discovered four moons orbiting Jupiter, providing evidence that not everything in the universe revolved around the Earth.

4. Phases of Venus: He observed the phases of Venus, similar to those of the Moon, which supported the heliocentric model of the solar system, where Venus orbits the Sun.

Therefore, while Galileo did not use a telescope to see the first four things in the universe, he used it to make significant discoveries about the Moon, the Milky Way, Jupiter's moons, and the phases of Venus, which revolutionized our understanding of the universe.