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    crash-course-astronomy-8


    
  • Tides: Crash Course Astronomy #8

    Today Phil explores the world of tides! What is the relationship between tides and gravity? How do planets and their moons become tidally locked? What would ...

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  • Introduction to the Solar System: Crash Course Astronomy #9

    In today's Crash Course Astronomy, Phil takes a look at the explosive history of our cosmic backyard. We explore how we went from a giant ball of gas to the ...

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  • Jupiter: Crash Course Astronomy #16

    Jupiter is the biggest planet in our solar system. The gas giant is NOT a failed star, but a really successful planet! It has a dynamic atmosphere with belts and ...

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  • Eclipses: Crash Course Astronomy #5

    The big question in the comments last week was, "BUT WHAT ABOUT ECLIPSES?" Today, Phil breaks 'em down for you. This episode is sponsored by ...

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  • The Moon: Crash Course Astronomy #12

    Join Phil for a tour of our capital-M Moon, from surface features, inside to the core, and back in time to theories about its formation. This episode is brought to you ...

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  • The Gravity of the Situation: Crash Course Astronomy #7

    In today's episode, Phil looks at how gravity plays out across the universe. This episode is sponsored by Squarespace: ...

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  • Venus: Crash Course Astronomy #14

    Venus is a gorgeous naked-eye planet, hanging like a diamond in the twilight -- but it's beauty is best looked at from afar. Even though Mercury is closer to the ...

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  • Telescopes: Crash Course Astronomy #6

    Today Phil explains how telescopes work and offers up some astronomical shopping advice. -- How Telescopes Work 1:07 Refractors vs Reflectors 2:50 ...

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  • Moon Phases: Crash Course Astronomy #4

    In this episode of Crash Course Astronomy, Phil takes you through the cause and name of the Moon's phases. -- Why the Moon Has Phases 0:36.1 Spheres in ...

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  • Exoplanets: Crash Course Astronomy #27

    Today Phil explains that YES, there are other planets out there and astonomers have a lot of methods for detecting them. Nearly 2000 have been found so far.

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  • Mercury: Crash Course Astronomy #13

    Mercury is the closest planet to the sun. It has no atmosphere and is, as such, covered in craters. It's also incredibly hot but, surprisingly, has water ice hiding ...

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  • Brown Dwarfs: Crash Course Astronomy #28

    While Jupiter is nowhere near massive enough to initiate fusion in its core, there are even more massive objects out there that fall just short of that achievement ...

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  • Neutron Stars: Crash Course Astronomy #32

    In the aftermath of a 8 – 20 solar mass star's demise we find a weird little object known as a neutron star. Neutrons stars are incredibly dense, spin rapidly, and ...

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  • Gamma-Ray Bursts: Crash Course Astronomy #40

    Gamma-ray bursts are not only incredible to study, but their discovery has an epic story all its own. Today Phil takes you through some Cold War history and then ...

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  • Jupiter's Moons: Crash Course Astronomy #17

    Before moving on from Jupiter to Saturn, we're going to linger for a moment on Jupiter's moons. There are 67 known moons, and 4 huge ones that we want to ...

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  • Black Holes: Crash Course Astronomy #33

    We've covered a lot of incredible stuff, but this week we're talking about the weirdest objects in space: BLACK HOLES. Stellar mass black holes form when a ...

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  • Saturn: Crash Course Astronomy #18

    Saturn is the crown jewel of the solar system, beautiful and fascinating. It is a gas giant, and has a broad set of rings made of ice particles. Moons create gaps in ...

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  • Meteors: Crash Course Astronomy #23

    Today Phil helps keep you from ticking off an astronomer in your life by making sure you know the difference between a meteor, meteorite, and meteoroid.

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  • Binary and Multiple Stars: Crash Course Astronomy #34

    Double stars are stars that appear to be near each other in the sky, but if they're gravitationally bound together we call them binary stars. Many stars are actually ...

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  • Cycles in the Sky: Crash Course Astronomy #3

    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. -- Table of ...

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  • Mars: Crash Course Astronomy #15

    The fourth planet from the sun and the outermost of the terrestrial planets, Mars has long been a popular spot for missions and imagination. Phil walks you ...

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  • Outtakes #1: Crash Course Astronomy

    After 10 information-heavy episodes, it's time for a little Bad Astronomy. -- PBS Digital Studios: http://youtube.com/pbsdigitalstudios Follow Phil on Twitter: ...

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  • Outtakes #3: Crash Course Astronomy

    Today we're taking a break for another round of "Bad Astronomy" Crash Course Astronomy posters available at DFTBA.com ...

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  • Asteroids: Crash Course Astronomy #20

    Now that we've finished our tour of the planets, we're headed back to the asteroid belt. Asteroids are chunks of rock, metal, or both that were once part of ...

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  • The Sun: Crash Course Astronomy #10

    Phil takes us for a closer (eye safe!) look at the two-octillion ton star that rules our solar system. We look at the sun's core, plasma, magnetic fields, sunspots, ...

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  • Outtakes #2: Crash Course Astronomy

    Time for another Bad Astronomy break. -- PBS Digital Studios: http://youtube.com/pbsdigitalstudios Follow Phil on Twitter: https://twitter.com/badastronomer Want ...

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  • Newtonian Gravity: Crash Course Physics #8

    I'm sure you've all heard about Isaac Newton and that apple that fell on his head and how that was a huge deal to our understanding of gravity. Well... let's talk ...

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  • The Earth: Crash Course Astronomy #11

    Phil starts the planet-by-planet tour of the solar system right here at home, Earth. -- Table of Contents Earth is a Planet 0:03 Layers of Earth 1:25 The Magnetic ...

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  • Uranus & Neptune: Crash Course Astronomy #19

    Today we're rounding out our planetary tour with ice giants Uranus and Neptune. Both have small rocky cores, thick mantles of ammonia, water, and methane, ...

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  • The Milky Way: Crash Course Astronomy #37

    Today we're talking about our galactic neighborhood: The Milky Way. It's a disk galaxy, a collection of dust, gas, and hundreds of billions of stars, with the Sun ...

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  • Comets: Crash Course Astronomy #21

    Today on Crash Course Astronomy, Phil explains comets. Comets are chunks of ice and rock that orbit the Sun. When they get near the Sun the ice turns into ...

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  • Deep Time: Crash Course Astronomy #45

    As we approach the end of Crash Course Astronomy, it's time now to acknowledge that our Universe's days are numbered. Stars will die out after a few trillion ...

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  • Naked Eye Observations: Crash Course Astronomy #2

    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. -- Table of ...

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  • Everything, The Universe...And Life: Crash Course Astronomy #46

    Here it is, folks: the end. In our final episode of Crash Course Astronomy, Phil gives the course a send off with a look at some of his favorite topics and the big ...

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  • Introduction to Astronomy: Crash Course Astronomy #1

    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 ...

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  • Star Clusters: Crash Course Astronomy #35

    Last week we covered multiple star systems, but what if we added thousands or even millions of stars to the mix? A star cluster. There are different kinds of ...

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