Astronomerrrss by Gabrielle Stanley

Eratosthenes

194 BCE

In mathematics, the Sieve of Eratosthenes is a simple, ancient algorithm for finding all prime numbers up to any given limit. It does so by iteratively marking as composite the multiples of each prime, starting with the first prime number, 2. This was the beginnings of algebra and math. That is why it is important.

Ptolemy

100

Claudius Ptolemy was a mathematician, astronomer, geographer and astrologer. He believed that the Earth was the center of the Universe. The word for earth in Greek is geo, so we call this idea a "geocentric" theory. Homie was incorrect but it's okay because this ideology was very important to the people of the time. People would kill and hang over their believes back in the day so Ptolemy is low key responsible for that.

Nicolaus Copernicus

1500

Heliocentrism is the astronomical model in which the Earth and planets revolve around the Sun at the center of the Solar System. Historically, heliocentrism was opposed to geocentrism, which placed the Earth at the center. Heliocentrism completely radicalized and changed the way that everybody thought our solar system looked/worked. That is why its important because if Copernicus didn't do this we still may think Earth is the center of the solar system.

Tycho Brahe

1580

The Tychonic system is a model of the Solar System published by Tycho Brahe in the late 16th century, which combines what he saw as the mathematical benefits of the Copernican system with the philosophical and "physical" benefits of the Ptolemaic system. Brahe helped perfect the heliocentric solar system model. We still use this model today which is why this discovery was important.

Johannes Kepler

1600

In astronomy, Kepler's laws of planetary motion are three scientific laws describing the motion of planets around the Sun. The orbit of a planet is an ellipse with the Sun at one of the two foci. A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time. Kepler helped advice the way we study planetary motion and what not. We later named a telescope after him.

Sir Isaac Newton

1680

This man did a lot.
Such as, Newton's law of universal gravitation, Infinitesimal calculus, and Classical mechanics. These discoveries are all heavily important in their own right. The laws of gravity especially helped the peoples understand of science and the world we live in. Without the discovery laws of gravity we wouldn't have a lot of the technology we have today.

Albert Einstein

1905

The theory of relativity usually encompasses two interrelated theories by Albert Einstein: special relativity and general relativity. Special Relativity applies to all physical phenomena in the absence of gravity. General relativity explains the law of gravitation and its relation to other forces of nature.