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Phil starts the planet-by-planet tour of the solar system right here at home, Earth.
11 • Crash Course Astronomy • Astronomy
We strip apart comets, peeling away their dusty layers and their iconic tails to reveal the secrets of these mysterious visitors from deep space.
6/6 • Strip the Cosmos • 2014 • Astronomy
Welcome to the first episode of Crash Course Astronomy. Your host for this intergalactic adventure is the Bad Astronomer himself, Phil Plait. We begin with answering a question: "What is astronomy?"
#1 • Crash Course Astronomy • Astronomy
Today on Crash Course Astronomy, Phil dives into some very dark matters. The stuff we can actually observe in the universe isn’t all there is. Galaxies and other large structures in the universe are created and shifted by a force we detect mostly indirectly, by observing its impact: DARK MATTER.
41 • Crash Course Astronomy • 2015 • Astronomy
Planets that orbit two suns instead of one might be deadly hell worlds, but new discoveries reveal that sci-fi star systems with binary stars might be optimal places for alien life.
How the Universe Works • 2018 • Astronomy
Carl Sagan teaches students in a classroom in his childhood home in Brooklyn, New York, which leads into a history of the different mythologies about stars and the gradual revelation of their true nature. In ancient Greece, some philosophers (Aristarchus of Samos, Thales of Miletus, Anaximander, Theodorus of Samos, Empedocles, Democritus) freely pursue scientific knowledge, while others (Plato, Aristotle, and the Pythagoreans) advocate slavery and epistemic secrecy.
7/13 • Cosmos: A Personal Voyage • 1980 • Astronomy