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The Sun is Not the Center of the Solar System
Despite what you may have heard or learned in school, the sun is NOT in fact the center of the solar system. And it won’t be until 2027… But this being a science channel, you might be thinking “What the heck is this guy talking about? Of...
Crash Course
The Scientific Revolution: Crash Course History of Science
So, what exactly is a scientific revolution? And are they more than just moments in time Historians use to mark the beginning and ending of things through time? In this episode we'll look into some ideas and people named Nick and how...
Curated Video
The Renaissance (An Introduction)
The period of history between the 14th and 17th century became known as the Renaissance—a word that means revival or rebirth. Itt is considered one of most important events in European history and it has had a lasting influence on...
Professor Dave Explains
History of Astronomy Part 2: Early Measurements of the Earth
After many centuries of pure observation, it finally became time for mankind to start doing some science to figure out the dimensions of the Earth and other nearby objects. What were these early experiments? What did they tell us? Let's...
Professor Dave Explains
History of Astronomy Part 3: Copernicus and Heliocentrism
Once it was determined that the Earth is round, the next step was to decipher the geometry of the solar system. Does everything rotate around the Earth, like in the geocentric model of Ptolemy? We thought so for thousands of years, but...
Crash Course
Crash Course History of Science #14: The Scientific Methods
Historically speaking, there is no one scientific method. There's more than one way to make knowledge. In this episode, learn about three scientists and the methods they pioneered. Galileo's focus on rational comparison of theories about...
Crash Course
Crash Course History of Science #13: The New Astronomy
This is the story of Tycho Brahe and Johannes Kepler and the contributions they made to the field of Astronomy. They synthesized a lot of new, old, and bold astronomical ideas into a single sun-centered, eccentricity-positive system....