# Canals on Mars Page: https://stenobird.com/podcast/citation-needed-8016/canals-on-mars Text version: https://stenobird.com/podcast/citation-needed-8016/canals-on-mars.md Podcast: [Citation Needed](https://stenobird.com/podcast/citation-needed-8016) Published: 2025-12-24T17:01:00+00:00 Episode link: https://citationpod.libsyn.com/canals-on-mars Audio file: https://dts.podtrac.com/redirect.mp3/pscrb.fm/rss/p/mgln.ai/e/35/clrtpod.com/m/arttrk.com/p/ARTS0/traffic.libsyn.com/secure/citationpod/cn454_wide.mp3?dest-id=518557 Processing state: not_requested JSON: https://stenobird.com/v1/public/podcasts/citation-needed-8016/episodes/canals-on-mars Duration seconds: 2039 ## Resource During the late 19th and early 20th centuries , it was erroneously believed that there were " canals " on the planet Mars . These were a network of long straight lines in the equatorial regions from 60° north to 60° south latitude on Mars, observed by astronomers using early telescopes without photography. They were first described by the Italian astronomer Giovanni Schiaparelli during the opposition of 1877, and attested to by later observers. Schiaparelli called these canali (" channels "), which was mistranslated into English as "canals". The Irish astronomer Charles E. Burton made some of the earliest drawings of straight-line features on Mars, although his drawings did not match Schiaparelli's. ## Actions - request_transcript: `POST https://stenobird.com/v1/public/podcasts/citation-needed-8016/episodes/canals-on-mars/transcription-requests` — Idempotently request low-priority transcript generation for this episode. - read_markdown: `GET https://stenobird.com/podcast/citation-needed-8016/canals-on-mars.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.