Uploaded June 2021 | Updated September 2026, 8 hours ago

---

We're reading "Dreams of Other Worlds," a book about the history of unmanned space travel by Chris Impey and Holly Henry on our Twitch channel! Every week on Monday at 9am PST we read another chapter on our TeachAstronomy Twitch channel and archive them here for anyone who misses it. Enjoy!

Follow us at twitch.tv/teachastronomy​​​​​ so you don't miss the next live stream!