# The Mysterious Planet X: A Hidden World Beyond Neptune or Astronomical Misinterpretation? Page: https://stenobird.com/podcast/unsolved-space-mysteries-7426660/the-mysterious-planet-x-a-hidden-world-beyond-neptune-or-astronomical-misinterpretation Text version: https://stenobird.com/podcast/unsolved-space-mysteries-7426660/the-mysterious-planet-x-a-hidden-world-beyond-neptune-or-astronomical-misinterpretation.md Podcast: [Unsolved Space Mysteries](https://stenobird.com/podcast/unsolved-space-mysteries-7426660) Published: 2026-04-27T21:00:00+00:00 Episode link: https://share.transistor.fm/s/c3d8542a Audio file: https://media.transistor.fm/c3d8542a/663c59eb.mp3 Processing state: not_requested JSON: https://stenobird.com/v1/public/podcasts/unsolved-space-mysteries-7426660/episodes/the-mysterious-planet-x-a-hidden-world-beyond-neptune-or-astronomical-misinterpretation Duration seconds: 824 ## Resource In this episode, we dive into the enigma of Planet X, a hypothetical planet beyond Neptune. Is it a real celestial body influencing the orbits of distant objects in our solar system, or is it a misinterpretation of astronomical data? Join us as we explore the history of the Planet X hypothesis, its potential implications for our understanding of the solar system, and the ongoing search efforts by astronomers. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info. ## Actions - request_transcript: `POST https://stenobird.com/v1/public/podcasts/unsolved-space-mysteries-7426660/episodes/the-mysterious-planet-x-a-hidden-world-beyond-neptune-or-astronomical-misinterpretation/transcription-requests` — Idempotently request low-priority transcript generation for this episode. - read_markdown: `GET https://stenobird.com/podcast/unsolved-space-mysteries-7426660/the-mysterious-planet-x-a-hidden-world-beyond-neptune-or-astronomical-misinterpretation.md` — Read the agent-friendly Markdown representation of this episode resource. A page view does not enqueue transcription. Agents should invoke `request_transcript` explicitly when they need this episode processed. ## Transcript Full transcripts are not published on public pages unless there is a clear rights basis.