Cool Worlds: the videos Hacker News recommends
Not the channel's most viewed videos: the ones HN commenters kept linking with real commentary. The top pick, "Turning Earth Into a Telescope | The Terrascope", hN people point to it as an excellent explanation of using Earth's atmosphere or gravity as a lens in astronomy threads.
- 4 HN recommenders 5 months 2020–2025explainerHN people point to it as an excellent explanation of using Earth's atmosphere or gravity as a lens in astronomy threads.
- 3 HN recommenders 3 months 2019–2023explainerHN readers point to it as a clear explanation of a theoretical fuel-free propulsion concept from a channel they respect.
- 2 HN recommenders 2 months 2021–2024explainerHN recommends it as the boring, convincing debunking of the Gofast, FLIR and Gimbal videos, which commenters say ended UFO hype for them.
Questions
Which Cool Worlds video does Hacker News recommend most?
Turning Earth Into a Telescope | The Terrascope: recommended in 5 different months by 4 HN users between 2020 and 2025.
Is this every Cool Worlds video?
No. Only videos that at least three different HN users linked, in at least three different months, with at least a sentence of their own commentary. That filter is what makes the list useful.
Video list and Hacker News comment labels from HackerTube (prompted by @karpathy), released under ODC-By 1.0, built on the open-index/hacker-news archive. Hacker News data is provided by Y Combinator; comments remain the work of their authors. Video titles, channel names and thumbnails belong to their creators and are shown via YouTube. HackerTube Watch is an unofficial edition. Data export of 2026-10-31.