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Artist's illustration of the dwarf planet Eris. Image credit: NASA
Astronomers have been searching for the mysterious Planet X for hundreds of years. It was the search for a theoretical planet beyond Uranus that turned up Neptune, and then again for Pluto. And even now there are some astronomers who think there’s a more distant planet out there. Oh, and there are a bunch of pseudoscience cranks trying to freak people out about the end of the world. Don’t worry, we’ll make time for them too, but first let’s start with some real science.
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Shownotes
Planet X
- Planet X as placeholder — Windows to the Universe
- Planet X — The UnMuseum
- The Planet X Saga — Bad Astronomy
Neptune as Planet X
- The Discovery of Neptune — Sky & Telescope
- John Couch Adams — NASA
- Urbain Le Verrier –– NASA
- Johann Gottfried Galle — Wiki
- O.J. Eggen (the Breakfast Astronomer!) — UW-Madison
- The British Case for C0-Prediction of Neptune
- Ep. 63 — Neptune
Pluto as Planet X
- Percival Lowell — Lowell Observatory
- Clyde Tombaugh
- Mike Brown — Caltech
- Mike Brown’s Planets
- Ep. 1: Pluto’s Planetary Identity Crisis
- Ep. 64: Pluto and the Icy Outer Solar System
- IAU definition of a planet
- The Discovery of Eris — Caltech
- Kuiper Belt Cliff — Running ‘Cause I Can’t Fly
Other Planets Out There Anywhere?
- No Tenth Planet Yet from IRAS
- Astrophysical Journal Letters (278:L63) (1984) by Houck et al titled Unidentified point sources in the IRAS minisurvey
- Constraining the Orbits of Planet X and Nibiru — Universe Today
- Short and Long Period Comets
- Earth Extinction Events — Wiki
- Richard Muller’s research on Moon impacts
- Nemesis Theory — Richard Muller
Take a look for yourself:
Future Telescopes to look for “Planet X”
2012 Nonsense
- 2012: No Planet X — Universe Today
- 2012: Planet X is Not Nibiru — UT
- 2012: Combat the Nonsense — UT
Transcript
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