Uploaded August 2025 | Updated September 2026, 2 weeks ago
Originally posted to the Astro Pro channel on January 25, 2023.
Buy the map here: store.nebula.tv/products/atlas-pro-mars-surface-art-print
Today we're looking at the popular myth of Planet X and seeing if there could be any truth behind the claims of there being a ninth planet.
Support me on Patreon here: patreon.com/atlaspro
Follow me on Twitter @theatlaspro
Sources / Further Reading
history.com/this-day-in-history/pluto-discovered#:~:text=However%2C%20in%201929%2C%20using%20the,combined%20with%20a%20blink%20microscope.
web.archive.org/web/20141216183818/http://home.dtm.ciw.edu/users/sheppard/pub/TrujilloSheppard2014.pdf
arxiv.org/abs/1601.05438
youtube.com/watch?v=WHNO079G1i8&t=3135s
realclearscience.com/lists/unsolved_problems_in_astronomy/kuiper_cliff.html
solarsystem.nasa.gov/planets/hypothetical-planet-x/in-depth
nytimes.com/2016/01/21/science/space/ninth-planet-solar-system-beyond-pluto.html
arxiv.org/abs/astro-ph/0404456
newscientist.com/article/mg19726381-600-the-mystery-of-planet-x
Originally posted to the Astro Pro channel on January 25, 2023.
Buy the map here: store.nebula.tv/products/atlas-pro-mars-surface-art-print
Today we're looking at the popular myth of Planet X and seeing if there could be any truth behind the claims of there being a ninth planet.
Support me on Patreon here: patreon.com/atlaspro
Follow me on Twitter @theatlaspro
Sources / Further Reading
history.com/this-day-in-history/pluto-discovered#:~:text=However%2C%20in%201929%2C%20using%20the,combined%20with%20a%20blink%20microscope.
web.archive.org/web/20141216183818/http://home.dtm.ciw.edu/users/sheppard/pub/TrujilloSheppard2014.pdf
arxiv.org/abs/1601.05438
youtube.com/watch?v=WHNO079G1i8&t=3135s
realclearscience.com/lists/unsolved_problems_in_astronomy/kuiper_cliff.html
solarsystem.nasa.gov/planets/hypothetical-planet-x/in-depth
nytimes.com/2016/01/21/science/space/ninth-planet-solar-system-beyond-pluto.html
arxiv.org/abs/astro-ph/0404456
newscientist.com/article/mg19726381-600-the-mystery-of-planet-x
