Portrait of Galileo Galilei
Ottavio Leoni, Reunion des Musees Nationaux
Galileo Galilei was an Italian astronomer and physicist who lived between 1564-1642. He was the first person to use a telescope to look at the heavens, and discovered craters in the moon.
Galileo found craters on the moon, and sunspots on the sun. This showed that the heavens weren't perfect, as Aristotle had said. This
offended the Roman Catholic Church, and Galileo spent the later years of his life under house arrest.
Shop Windows to the Universe Science Store!
Our online store
includes fun classroom activities
for you and your students. Issues of NESTA's quarterly journal, The Earth Scientist
are also full of classroom activities on different topics in Earth and space science!
You might also be interested in:
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
The Earth may only have one Moon, but it's a big one! The Earth's Moon is the fifth largest in the whole solar system. But it is still smaller than the Earth, so objects weigh less on the Moon than they...more
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
For many years, people believed that the Earth was the center of the universe, that the Earth didn't move and that the planets, Sun, moon, and the stars moved on spheres around the Earth. Astronomers such...more
Tycho Brahe was a Danish astronomer who lived between 1546-1601. For over twenty years he made observations of stars, comets, and planets in the night sky. Tycho also built the first observatory but did...more
Nicholas Copernicus was a Polish asrtonomer who lived between 1473-1543. A long time ago, people believed that the Earth was the center of the universe. Copernicus changed this belief when he introduced...more
Leonardo da Vinci was an Italian artist and scientist who lived between 1452-1519. While he is best known as a painter, Leonardo mostly worked for the military. He made sketches of tanks, airplanes, and...more
Galileo Galilei was an Italian astronomer and physicist who lived between 1564-1642. He was the first person to use a telescope to look at the heavens, and discovered craters in the moon. Galileo found...more