Be one of the first 500 people to sign up with this link and get 20% off your subscription with Brilliant.org! https://brilliant.org/realengineering/ New streaming platform: https://watchnebula.com/ Vlog channel: https://www.youtube.com/channel/UCMet4qY3027v8KjpaDtDx-g Patreon: https://www.patreon.com/user?u=2825050&ty=h Facebook: http://facebook.com/realengineering1 Instagram: https://www.instagram.com/brianjamesmcmanus Reddit: https://www.reddit.com/r/RealEngineering/ Twitter: https://twitter.com/thebrianmcmanus Discord: https://discord.gg/s8BhkmN Get your Real Engineering shirts at: https://standard.tv/collections/real-engineering Credits: Writer/Director: Brian McManus Co-Writer/Editor: Co-Writer: Primal Space (https://www.youtube.com/channel/UClZbmi9JzfnB2CEb0fG8iew) Animator: Mike Ridolfi (https://www.moboxgraphics.com/) Sound: Graham Haerther (https://haerther.net/) Thumbnail: Simon Buckmaster https://twitter.com/forgottentowel References: [1] https://www.lpi.usra.edu/publications/newsletters/mercmessenger/issue10.pdf [2] http://bit.ly/2kqLiWY [3]http://www.planetary.org/explore/projects/lightsail-solar-sailing/story-of-lightsail-part-1.html [4] https://courses.lumenlearning.com/physics/chapter/29-4-photon-momentum/ [5] https://ccar.colorado.edu/scheeres/scheeres/assets/Theses%20and%20Abstracts/rios-reyes_dissertation.pdf [6]http://www.planetary.org/blogs/jason-davis/lightsail-2-successful-flight-by-light.html [7] https://core.ac.uk/download/pdf/46702113.pdf [8] http://bit.ly/2ku7GPp [9] https://strathprints.strath.ac.uk/31455/1/Macdonald_M_Pure_Solar_sailing_applications_and_technology_advancement_Feb_2011.pdf https://pdfs.semanticscholar.org/5c87/f248e68d3f666d55e94888013f32f92ebaa2.pdf [10] https://ccar.colorado.edu/scheeres/scheeres/assets/Theses%20and%20Abstracts/rios-reyes_dissertation.pdf Thank you to AP Archive for access to their archival footage. Music by Epidemic Sound: http://epidemicsound.com/creator Songs: Forgotten Years - Trevor Kowalski Superior - Silver Maple Keep It Running - Imprismed Atomic Numbers 1 - August Wilhelmsson Satellites - Ebb & Flod Pulsar - Jakob Ahlbom Thank you to my patreon supporters: Adam Flohr, Henning Basma, Hank Green, William Leu, Tristan Edwards, Ken Coltan, Andrew McCorkell, Ian Dundore, John & Becki Johnston. Nevin Spoljaric, Jason Clark, Devin Rathbun, Thomas Barth, Paulo Toyosi Toda Nishimura