Sources and further reading: https://sites.google.com/view/sources-stellar-engines Get your Stellar Engine Infographic Poster here: https://shop.kurzgesagt.org Nothing in the Universe is static. In the milky way, billions of stars orbit the galactic center. Some, like our sun, are pretty consistent, keeping a distance of around 30,000 light years from the galactic center, completing an orbit every 230 million years. This dance is not an orderly ballet - more like a skating rink filled with drunk toddlers. This chaos makes the galaxy dangerous. Our solar neighbourhood is constantly changing, with stars moving hundreds of kilometers every second. Only the vast distances between objects protect us from the dangers out there. But we might get unlucky in the future. At some point we could encounter a star going supernova. Or a massive object passing by and showering earth with asteroids. If something like this were to happen we would likely know thousands, if not millions of years in advance. But we still couldn’t do much about it. Unless… we move our whole solar system out of the way. OUR CHANNELS ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ German Channel: https://kgs.link/youtubeDE Spanish Channel: https://kgs.link/youtubeES HOW CAN YOU SUPPORT US? ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ This is how we make our living and it would be a pleasure if you support us! Get Merch designed with ❤ from https://kgs.link/shop Join the Patreon Bird Army 🐧 https://kgs.link/patreon DISCUSSIONS & SOCIAL MEDIA ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ Reddit: https://kgs.link/reddit Instagram: https://kgs.link/instagram Twitter: https://kgs.link/twitter Facebook: https://kgs.link/facebook Discord: https://kgs.link/discord Newsletter: https://kgs.link/newsletter OUR VOICE ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ The Kurzgesagt voice is from Steve Taylor: https://kgs.link/youtube-voice OUR MUSIC ♬♪ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ 700+ minutes of Kurzgesagt Soundtracks by Epic Mountain: Spotify: https://kgs.link/music-spotify Soundcloud: https://kgs.link/music-soundcloud Bandcamp: https://kgs.link/music-bandcamp Youtube: https://kgs.link/music-youtube Facebook: https://kgs.link/music-facebook The Soundtrack of this video: Soundcloud: https://bit.ly/34L3USG Bandcamp: https://bit.ly/38YgiC5 Youtube: https://bit.ly/2CZ6PeN Facebook: http://bit.ly/2qW6bY4 🐦🐧🐤 PATREON BIRD ARMY 🐤🐧🐦 ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ Many Thanks to our wonderful Patreons from http://kgs.link/patreon who support us every month and made this video possible: Patrick Hall, Evan Wenden, riz, Nick Rose, Kevin, Patrick Huizinga, Mike Chang, Deddy Jobson, David Nir, Danny Mill, Kai Hebeler, Gabriel Averett, Pierre Xavier, Rohan Kapoor, Bray Demonbreun, Olivier L, Jared Capelle, Mike, Pierre Krenn, Kristofer Kirss, The Captain, Имяя Фамилияя, Marie Samira, Hekmon, Dsurian, Martina, William Wold, Carston Cook, Daniel Bruce, Milan Juza, michal pol, Dmitry Sadakov, Brian Tieskoetter, kagami suigin, Rosamelia, Amir Johnson, Spencer Byars, Jarrod Parsons, Tayler Martin, bmwniquester, Saito Nakamura, Arnulf Kraan, Emilia Liu, Roosevelt Perry, Frank Blood, Máté Szabó, Kasper Kylmälä, Zach Riddle, Damian Campbell, XeleX55, Johann Pardanaud, Cemil Urganci, 3theNet