* Gravity is a Force * Different Types of Orbit * Escape Velocity * Weightless Mass
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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?"
Today on Crash Course Astronomy, Phil invites you to head outside and take a look at all the incredible things you can see with your naked eye.
This week we build on our naked eye observations from last week and take a look at the cyclical phenomena that we can see at work in the universe.
In this episode of Crash Course Astronomy, Phil takes you through the cause and name of the Moon's phases.
Today Phil explains how telescopes work and offers up some astronomical shopping advice.
* Gravity is a Force * Different Types of Orbit * Escape Velocity * Weightless Mass
For twenty years, NASA's Cassini spacecraft revealed the strange secrets of Saturn until it vaporized in its atmosphere in a blaze of glory. But today its legacy lives on, as fresh data from the probe helps scientists make brand-new discoveries.
S7E10 • How the Universe Works • 2019 • Astronomy
The Apollo space program embraces tragic setbacks and historic success; the last stage includes the Apollo 11 space flight which landed the first two people on the Moon.
S1E2 • Apollo Back to the Moon • 2019 • Astronomy
New discoveries help experts in their search for the first alien moon outside our solar system, which could be Earth-like worlds with the potential for life; they haven't found any, but 21st-century methods might change everything.
Space's Deepest Secrets • 2019 • Astronomy
We strip apart the Sun and tear off boiling seas of plasma, light particles, and force fields layer by layer to explore the secrets that lie beneath the surface of Earth’s powerhouse.
S1E2 • Strip the Cosmos • 2014 • Astronomy
Dark matter and dark energy are locked in an epic battle for control of the cosmos, and the winner will determine the fate of the universe. New discoveries might reveal which force will emerge victorious.
S7E7 • How the Universe Works • 2019 • Astronomy
Asteroids strike, planets collide, black holes blast out death rays, volcanoes erupt and ice engulfs the planet. These are the universe’s weapons of extinction. They’ve happened before - wiping out entire species, and they will happen again. Are we next?
S3E6 • How the Universe Works • 2014 • Astronomy