Where’s the Best Place to Watch The ISS Deorbit? | Cosmic Queries #114
By StarTalk
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Could there be a hidden planet lurking beyond Pluto and Neptune? Neil deGrasse Tyson and comic co-host Chuck Nice tackle a wide-ranging grab bag of fan questions covering Planet 9, galaxy shapes, dark matter, the odds of getting hit by a meteorite, and more! Learn about the Kuiper Belt and theories that there could be a ninth planet there lurking in the shadows. How long would the ninth planet's orbit be? Learn about the definition of planet and how Pluto’s demotion also resulted in the promotion of Ceres. We walk through the three criteria for planethood. What dictates a galaxy's shape? Neil breaks down the different galaxy shapes and how they form and what they mean. Neil also touches on dwarf galaxies, lenticular galaxies, and the seven known dwarf galaxies currently orbiting our own. Could dark matter simply be ordinary matter hidden in a parallel universe hidden in the folds of spacetime? We discuss dark matter as gravity leaking in from other universes. We also explore whether
Tags: startalk, star talk, startalk radio, neil degrasse tyson, neil tyson, science, space, astrophysics, astronomy, podcast, space podcast, science podcast, astronomy podcast, niel degrasse tyson, physics
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