We like to imagine of gravitational orbits as the conic sections: circles, ellipses, etc. That's only for two-body problems though. Let's take a look at three-body problems (and beyond) using Newtonian mechanics as well as General Relativity. How weird can orbits actually get?
Thanks to Phil Lynch for permission to use his Kerr black hole simulation:
https://twitter.com/PhilipLynchGW
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VIDEO ANNOTATIONS/CARDS
Tunnel Through The Earth:
https://youtu.be/F0zUOcZN6sI
Solar System Model:
https://youtu.be/iGV4y2W2SOE
General Relativity Playlist:
https://www.youtube.com/playlist?list=PLOVL_fPox2K83_36YgnGisn4rxNvgq1iR
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RELATED YOUTUBE VIDEOS
Dr Becky on Mercury:
https://youtu.be/8Sm99OVG5A8
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OTHER SOURCES
https://arxiv.org/abs/1805.07980
http://www.shao.cas.cn/grefa/journalClub/201803/W020180315617343884386.pdf
https://arxiv.org/abs/0802.0459
https://arxiv.org/abs/0706.0622
https://arxiv.org/abs/0904.4184
https://github.com/BlackHolePerturbationToolkit/KerrGeodesics
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LINKS TO COMMENTS
https://www.youtube.com/watch?v=LbJJFnf-NWM&lc=UgytY8YADrn0DfaoZut4AaABAg
https://www.youtube.com/watch?v=LbJJFnf-NWM&lc=UgwY1PdEDw2YmGt-pwR4AaABAg
https://www.youtube.com/watch?v=LbJJFnf-NWM&lc=Ugy6RLFmBwryXMSmpmp4AaABAg
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IMAGE CREDITS
Black Hole Simulation:
https://svs.gsfc.nasa.gov/13326
Early Solar System:
https://svs.gsfc.nasa.gov/10659
Oumuamua Trajectory:
https://youtu.be/H62WsztrGi0