Why is the Earth Round and the Milky Way Flat? | Space Time | PBS Digital Studios

Let PBS know what type of digital series you d like to see by taking this survey: https://www.surveymonkey.com/r/pbsds2016 Why does our universe make spheres and disks? Get your own Space Time t-shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Our universe is not a very diverse place when it comes to shapes. Large celestial bodies become spheres, galaxies become discs, and there is little room for variation. Why is this? Well it turns out physics has some pretty strict rules when it comes to creating new planetary bodies. On this week s Space Time, we explore equillibrium and symmetry, the two defining factors that shape our universe. _____________________ COMMENTS: Felix Ironfist https://www.youtube.com/watch?v=JDmKLXVFJzk&lc=z12dwzk4iquld5g0323uivizxm2xxxdk2 Florent POUJOL https://www.youtube.com/watch?v=JDmKLXVFJzk&lc=z13pcn3rgpzxexgym04cfbeokpeaspzidjw Reuben Silva https://www.youtube.com/watch?v=JDmKLXVFJzk&lc=z12bcv4w0muzd3ihm04cchbp0s3kyjpj3p00k Dom Vasta https://www.youtube.com/watch?v=JDmKLXVFJzk&lc=z13ns1kqdw2kf5bzm04ccd4arybjvvvgcow0k ______________________ Written and hosted by Matt O Dowd Made by Kornhaber Brown (www.kornhaberbrown.com)