…or why we live on an onion made of magma
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Thanks to Miles Traer and Mike Osborne for geophysics help on this one!
Why does Earth have a liquid core, and how do we know?
How many pennies would you have to stack to melt the one on the bottom? http://www.reddit.com/r/askscience/comments/2g8jj9/how_many_pennies_need_to_be_stacked_before_the/
Why are the inner planets rocky and the outer ones are gas giants?
Have an idea for an episode or an amazing science question you want answered? Leave a comment below!
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Email me: itsokaytobesmart AT gmail DOT com
For more awesome science, check out: http://www.itsokaytobesmart.com
Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios
Joe Hanson - Host and writer
Joe Nicolosi - Director
Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer
Katie Graham - Director of Photography
Andrew Matthews - Editing/Motion Graphics
John Knudsen - Gaffer
Dalton Allen - Post-production Intern
"Ouroboros" by Kevin MacLeod
Stock images via Shutterstock
Last week's video: Why do clouds stay up? http://www.youtube.com/watch?v=DjByja9ejTQ
The Physics of Space Battles http://www.youtube.com/watch?v=ZFOuxAx-dkc
Why Did We Blow on NES Games? http://www.youtube.com/watch?v=4Gf9mtXnJfM
The Science of Game of Thrones - http://www.youtube.com/watch?v=Utu-LpJn3Is
The Far Future of the Universe - http://www.youtube.com/watch?v=Jl9DwNOonOA
There Was No First Human - http://www.youtube.com/watch?v=xdWLhXi24Mo
How The Elements Got Their Names - http://www.youtube.com/watch?v=mtg9p6A6xnY
Tagged under: science,joe hanson,' smart, smart,' smart, smart,Structure (Field Of Study),Geology (Field Of Study),Geophysics (Field Of Study),Hollow Earth (Literature Subject),structure earth,Earth (Planet),Solar System (Star System),Planet (Celestial Object Category),origin solar system,accretion,Protoplanetary Disk (Celestial Object),differentiation,vsauce,minuteearth,minutephysics,scishow,pbs,solar,planets
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