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Hypatia

Hypatia was an Egyptian math and astronomy teacher who lived between 370-415. She taught math, astronomy, and philosophy at a school in Alexandria, Egypt. She was the daughter of Theon, a famous mathematician of the time.

Hypatia wrote three books on math and astronomy. In addition, she invented several tools relating to astronomy and the Earth sciences.


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Science, Evolution, and Creationism

How did life evolve on Earth? The answer to this question can help us understand our past and prepare for our future. Although evolution provides credible and reliable answers, polls show that many people turn away from science, seeking other explanations with which they are more comfortable....more

Archimedes

Archimedes was a Greek mathematician and engineer who lived between 287-212 B.C. His greatest contributions are in the field of geometry, where he did much work with circles and their properties. Legend...more

Aristotle

Aristotle was a Greek philosopher who lived between 384-322 B.C. He was one of the greatest thinkers of the world and wrote on every major area of thought. Aristotle thought that the Earth was at the...more

Democritus

Democritus was a Greek philosopher who lived between 470-380 B.C. He believed that everything in the universe was made up of tiny, indestructible particles called atoms. Democritus had many remarkable...more

Eratosthenes

Eratosthenes was a Greek scientist. He lived from 276 to 194 B.C. He studied astronomy, geography, and math. Eratosthenes is famous for making the first good measurement of the size of the Earth. He lived,...more

Plato

Plato was a Greek philosopher who lived between 427-327 B.C. He founded the Academy in Athens, a school which made many important scientific discoveries in ancient times. Plato believed that knowledge...more

Ptolemy

Ptolemy was a Greek astronomer who lived between 85-165 A.D. He put together his own ideas with those of Aristotle and Hipparchus and formed a unified model of the universe. Ptolemy believed that the...more

Pythagoras

Pythagoras was a Greek philosopher who lived between 580-520 B.C. He believed that everything was related to mathematics and once said "all is number". Pythagoras started a school in Greece, which had...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA