Night Sky Finder

Sky cameras record anything that moves at night: meteors, but also planes, satellites, birds, insects, clouds, lightning and aurora. Camera owners check hundreds of clips every night by hand to find the few real meteors. Night Sky Finder does this checking. My Python code (OpenCV) first measures the moving object: speed, straightness, how long it is visible, blinking, and sky flashes. Then Meta's Muse Spark investigates like a detective: it looks at the measurements and pictures, chooses up to 3 extra checks (zoom in, brightness over time, frames over time, position in the sky, or watching the clip), and then decides "meteor or not" and explains why in plain words. Every check it makes is shown in the app. Results: on 200 clips checked by 5 experts (NightSkyUCP dataset), Night Sky Finder was right 85% of the time, with only 5 wrong. Muse Spark alone, just watching the video, was right 35%. When it says "meteor", it is right 76 of 79 times. It costs about 1 US cent per clip. All test answers are public in the Results tab, and the limits are listed in LIMITATIONS.md. Live demo: https://night-sky-finder.vercel.app Demo video: https://youtu.be/8PmsMBmNhJw