Astronomer Biographies

Helping create algebra and inspiring the word “algorithm.”

Creating a simple system to classify stars that astronomers still use today

Helping people understand space and science through books, TV shows, and exciting ideas.

Discovering what stars are made of

Discovering that the universe is much bigger than we thought and that it is expanding.

Helping people understand the sky by improving the telescope and studying space.

He helped explain that the universe is expanding and began with the Big Bang.

Discovering a rule about special stars that helped scientists measure distances in space and understand the size of the universe.

Discovering the laws of motion and gravity that help explain how the world moves

Discovering the laws that explain how planets move around the Sun

He proposed that Earth and the other planets move around the Sun.

A famous Persian poet and a brilliant mathematician who helped improve calendars and algebra

Making the most accurate sky measurements before telescopes and helping change how people understood the universe

Discovering strong evidence for dark matter by studying how galaxies spin