18: Mysterious Planet 9

We're back from our summer hiatus with an appropriately Hallowe'eny story about a goblin. Or rather, The Goblin, a tiny lump of rock far out in the Solar System that might just point to the existence of the long-sought, mysterious Planet 9 ...

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Syzygy is produced by Chris Stewart and co-hosted by Dr Emily Brunsden from the Department of Physics at the University of York.

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Things we talk about in this episode:

The Goblin paper: https://arxiv.org/pdf/1810.00013.pdf

A more readable story about The Goblin: https://www.smithsonianmag.com/science-nature/new-discovery-goblin-stirs-signs-elusive-planet-9-180970442/

The Astronomical Unit: https://en.wikipedia.org/wiki/Astronomical_unit

The Kuiper Belt: https://solarsystem.nasa.gov/solar-system/kuiper-belt

The Voyager missions: https://voyager.jpl.nasa.gov

The Heliopause: https://en.wikipedia.org/wiki/Heliosphere

The Oort Cloud: https://solarsystem.nasa.gov/solar-system/oort-cloud

Our nearest star (other than the Sun, which is a star also): https://en.wikipedia.org/wiki/Proxima_Centauri

Trans-Neptunian Objects: https://www.universeguide.com/fact/kuiperbelt

The Subaru Telescope: https://subarutelescope.org

The Skymapper Telescope: https://rsaa.anu.edu.au/observatories/telescopes/skymapper-telescope

The Zooniverse — get some Citizen Science going: https://www.zooniverse.org/

Zooniverse — Backyard Worlds: https://www.zooniverse.org/projects/marckuchner/backyard-worlds-planet-9