Lastlight ยท Burst Chaser Original fallback game after live catalog and maintained GitHub candidate review. Original JavaScript game: MIT, see LICENSE.txt. GitHub source reference: https://github.com/astropy/astroplan Role: observation-planning research ONLY; Python package not included or ported. No upstream code or artwork copied. Observed 226 stars on 2026-11-06; BSD-3-Clause; pushed 2026-10-25T00:16:54Z; commit 84f305aaced0895fbe8a90c8bf1964ef3ca5825c. Inspiration: NASA Swift mission farewell, https://science.nasa.gov/missions/swift/nasas-swift-mission-ends/ . Fictional signals and scoring; not a physical simulation. Artwork: GPT image model generated four-nebula atlas (cyan remnant, coral burst, violet bloom, emerald nursery), optimized locally as nebulae.webp, 1024x1024. Displayed in signal portrait, sky field and observation journal. Illustrative AI art, not actual astrophotography. Metadata tags: github-source, game. Static local-only game; no account, external authentication, network service, persistent backend, external assets, popups or downloads required. Optional synthesized sound, device-local best scores.