Cosmic Brief
A daily 3-minute plain-language recap of major astronomy and space-science stories, sourced from arXiv, Nature, and observatory press releases.
Science-curious adults who want to keep up with astronomy news without reading papers
- AI-written 3-minute audio brief each morning covering the day's top space stories
- 'Why it matters' framing for non-specialists plus a one-click jump to the original paper
- Topic filters for exoworlds, black holes, cosmology, or mission updates
- Weekly deeper-dive episode on a trending discovery like the exomoon candidate
Major announcements like the potential first exomoon generate huge news interest but most coverage assumes technical fluency that casual readers lack.
Strong latent interest evidenced by HN exomoon thread (142 pts) and multiple established outlets running astronomy newsletters (Universe Today, Sky & Telescope, Astronomy.com, NASA, SpaceNews), but existing free coverage already captures much of this audience.Universe Today - Space and Astronomy News ↗Subscribe to Email Newsletters | Sky & Telescope Magazine ↗
Market is already crowded with free daily astronomy newsletters (Universe Today, Astronomy.com, Sky & Telescope) and AI arXiv summarizers (arXivSub, daily-arXiv-ai-enhanced, arxiv_summarizer) targeting researchers; the plain-language angle for laypeople is a thinner niche.arXivSub - AI-powered arXiv Research Tool ↗Universe Today - Space and Astronomy News ↗
Substack science publications earn real revenue but median price is only $6/mo with ~50% annual churn; competing against free established outlets makes paid conversion hard for a niche astronomy digest.Which Substack Publications Make the Most Money ↗Substack Statistics and Facts (2025) ↗
Public interest in astronomy/space is durable (centuries-old fascination, recurring viral events like exomoon discoveries), and arXiv/Nature/observatory PRs provide a stable, long-lived content pipeline.Newsletters | Astronomy.com ↗
Trivial to build: multiple open-source repos already automate daily arXiv fetching + AI summarization via Gemini/OpenAI APIs, and press release RSS feeds are freely available.ArXiv Paper Summarizer - GitHub ↗dw-dengwei/daily-arXiv-ai-enhanced - GitHub ↗