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  • 03:12 Why Is The Solar System Flat?

    Why Is The Solar System Flat?

    362 views / 0 likes - added

    Thanks to Embry-Riddle Aeronautical University for supporting us on Subbable.com! - http://prescott.erau.edu A big thanks as well to Subbable supporters The Great Tobini (aka Tobyn Pearson) and Georgi Yanev! You make it possible for us to continue making

  • 02:10 Why Do Birds Sing In The Morning?

    Why Do Birds Sing In The Morning?

    606 views / 0 likes - added

    You’re having a dream, and for some reason that giant rabbit that’s about to eat you starts to sing like a bird. You wake up to find that birds are singing outside your window! Check out this SciShow Quick Question to find out why those birds sing in the

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  • 10:41 Stars: Crash Course Astronomy #26

    Stars: Crash Course Astronomy #26

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    Today Phil’s explaining the stars and how they can be categorized using their spectra. Together with their distance, this provides a wealth of information about them including their luminosity, size, and temperature. The HR diagram plots stars’ luminosity

  • 13:23 The Big Bang: Crash Course Astronomy #42

    The Big Bang: Crash Course Astronomy #42

    633 views / 0 likes - added

    Thanks to observations of galaxy redshifts, we can tell that the universe is EXPANDING! Knowing that the universe is expanding and how quickly its expanding also allows us to run the clock backwards 14 billion years to the way the universe began - with a

  • 11:10 White Dwarfs & Planetary Nebulae: Crash Course Astronomy #30

    White Dwarfs & Planetary Nebulae: Crash Course Astronomy #30

    275 views / 0 likes - added

    Today Phil follows up last week’s look at the death of low mass stars with what comes next: a white dwarf. White dwarfs are incredibly hot and dense objects roughly the size of Earth. They also can form planetary nebulae: huge, intricately detailed object


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