21-00-Starlight-CyberObservatory
21时的星空·赛博天文台：让AI为你选一个日子，画一座私人星座，写一个故事，送你一片21:00的星空。
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GITHUB · launched Nov 8, 2026 · 10 upvotes (top 99%) · 0 views
Niche: stargazing and astronomy weather apps · 90 launches, 12 in the last 7 days ▼ -29% · Explore this niche →
Category and tags
- Media & entertainment
- Content generation
- B2C
- AI-native
- Commercial product
Visit website ↗ Source listing ↗
More like this: all 90 launches in stargazing and astronomy weather apps →
Could you build this?
Yes An interactive star map built from a public star catalog (HYG), with constellation drawing, saved images, and LLM-generated stories. Front-end graphics and API calls cover it.
Competitors
Other products that read as similar to this one : 135 launches clear the similarity bar, closest 8 shown.
Attention rank: #135 of 136 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 306 days after the earliest competitor.
- StarAssistant · github · 2026-09-13 · 10 upvotes · similarity 0.54
- Stardew-Desk · github · 2026-10-13 · 63 upvotes · similarity 0.52
- GoodnightUESTC · github · 2026-10-21 · 18 upvotes · similarity 0.49
- Harbor · github · 2026-09-11 · 6 upvotes · similarity 0.46
- agent-stardew · github · 2026-09-19 · 9 upvotes · similarity 0.45
- Antigravity-Star-Suite · github · 2026-10-31 · 18 upvotes · similarity 0.45
- NightSkyCast · ph · 2026-10-30 · 1 upvotes · similarity 0.42
- cyber-xiaoya-live · github · 2026-10-24 · 285 upvotes · similarity 0.42
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.