# Rare Black Hole Pair Reveals Future Gravitational Waves Page: https://stenobird.com/podcast/bedtime-astronomy-6846704/rare-black-hole-pair-reveals-future-gravitational-waves Text version: https://stenobird.com/podcast/bedtime-astronomy-6846704/rare-black-hole-pair-reveals-future-gravitational-waves.md Podcast: [Bedtime Astronomy](https://stenobird.com/podcast/bedtime-astronomy-6846704) Published: 2026-04-20T09:00:17+00:00 Episode link: https://www.spreaker.com/episode/rare-black-hole-pair-reveals-future-gravitational-waves--71207034 Audio file: https://dts.podtrac.com/redirect.mp3/api.spreaker.com/download/episode/71207034/2blackp.mp3 Processing state: not_requested JSON: https://stenobird.com/v1/public/podcasts/bedtime-astronomy-6846704/episodes/rare-black-hole-pair-reveals-future-gravitational-waves Duration seconds: 1463 ## Resource Astronomers have identified, for the first time, a pair of supermassive black holes orbiting extremely close at the center of Markarian 501. By analyzing decades of radio data, scientists detected two distinct particle jets tracing a rapid 121-day orbit. This rare system offers direct evidence of how black holes grow through mergers and provides a unique opportunity to study low-frequency gravitational waves before an eventual cosmic collision. Thank you for listening to Bedtime Astronomy — your guide to the cosmos. New episodes on space exploration, NASA missions & the latest astronomy breakthroughs. This episode includes AI-generated content. ## Actions - request_transcript: `POST https://stenobird.com/v1/public/podcasts/bedtime-astronomy-6846704/episodes/rare-black-hole-pair-reveals-future-gravitational-waves/transcription-requests` — Idempotently request low-priority transcript generation for this episode. - read_markdown: `GET https://stenobird.com/podcast/bedtime-astronomy-6846704/rare-black-hole-pair-reveals-future-gravitational-waves.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.