SkyGuardian
An opt-in alert app for parents and educators that flags nights when a bright satellite streak (or future Reflect Orbital mirror-satellite beam) will be visible above their neighborhood — turning an obscure ESO warning into a teachable classroom moment.
Elementary / middle-school science teachers and parents of curious kids
- Weekly 'What's overhead tonight' email with kid-friendly explainer for any visible satellite events
- Ready-to-print lesson plan PDFs aligned to NGSS on light pollution, satellite constellations, and orbital mechanics
- 'Look up together' AR overlay that points your phone at the sky and labels passing satellites in real time
- Light-pollution citizen-science game where classrooms log streetlight sightings to build a national map
The ESO 'Beyond the limit' paper is a once-per-generation chance to seed classroom interest in orbital astronomy before mega-constellations become the new normal; teachers need ready-made material while it's in the news.
ESO 'Beyond the limit' paper is real (1 July 2026, ~1.7M satellites projected) and Reflect Orbital is getting serious coverage (NYT, Space.com, NASA Space News), but the HN post at 154 pts reflects tech-curious readers, not the narrow teacher/parent segment the app targets — and no evidence of teachers actively searching for satellite-streak alert tools."Beyond the limit": one million satellites and mirrors in space pose grave threat to the night sky ↗Company's plan to launch 4,000 space mirrors alarms scientists ↗
No app found that combines satellite-streak push alerts with classroom-ready lesson material; however adjacent categories are crowded — generic satellite trackers (OrbitalRadar, TrackTheSky, Star Walk), kids-astronomy learning apps (Cosmicademy, SpaceVidya, Starry Night Education) — leaving a thin but not empty slice.Satellite Pass Predictions — ISS & Starlink Visible Tonight From Your Location ↗Cosmicademy - The Easy Way to Learn the Sky ↗
Teacher/parent spend on niche astronomy tools is real but small — Star Walk Kids and Cosmicademy monetize via freemium/curriculum sales, but a satellite-streak-only alert is a thin feature, not a category; school budgets favor integrated curriculum packages (e.g., Starry Night Education K-12) over single-purpose alert apps.Star Walk Kids: Astronomy Game Review - AI Tools for Teachers ↗Starry Night Elementary School | Astronomy Education Software ↗
Reflect Orbital's EARENDIL-1 demo filed for FCC in April 2026 and 4,000-satellite constellation targeted by 2030; mega-constellations (Starlink, Kuiper, GuoWang) are growing regardless — the underlying signal exists for 5-10+ years, though media-cycle attention around the ESO paper will fade within months.4,000 Orbital Mirrors Could Catastrophically Brighten Night Sky, Astronomers Warn ↗A Night Light in the Sky? Reflect Orbital Wants to Launch a Big Space Mirror ↗
Build is tractable — TLE/CelesTrak + N2YO-style APIs supply pass predictions, geolocation push notifications are standard, weather/clear-sky overlays exist; the harder work is the educational content layer (lesson plans, NGSS alignment) which is labor-intensive but not technically novel.Track The Sky — Real-Time 3D Satellite Tracker ↗Starlink Tracker: Find Starlink Satellites Tonight | Satellite Train ↗