SciShow: What Are We REALLY Using Space Lasers For?

Teacher or professor: SciShow
Subject: Science
Content of the Lesson: Head to https://linode.com/scishow to get a $100 60-day credit on a new Linode account. Linode offers simple, affordable, and accessible Linux cloud solutions and services. Ever since we started launching stuff into space, we've communicated with spacecraft (and astronauts) using radio waves. But over the past few decades, scientists have experimented with a new technique that could make things a lot more efficient: optical lasers. Hosted by: Stefan Chin (he/him) ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Matt Curls, Alisa Sherbow, Dr. Melvin Sanicas, Harrison Mills, Adam Brainard, Chris Peters, charles george, Piya Shedden, Alex Hackman, Christopher R, Boucher, Jeffrey Mckishen, Ash, Silas Emrys, Eric Jensen, Kevin Bealer, Jason A Saslow, Tom Mosner, Tomás Lagos González, Jacob, Christoph Schwanke, Sam Lutfi, Bryan Cloer ---------- Looking for SciShow elsewhere on the internet? SciShow Tangents Podcast: https://scishow-tangents.simplecast.com/ TikTok: https://www.tiktok.com/@scishow Twitter: http://www.twitter.com/scishow Instagram: http://instagram.com/thescishowFacebook: http://www.facebook.com/scishow #SciShow #science #education #learning #complexly ---------- Sources: https://airandspace.si.edu/collection-objects/box-magnesium-powder-experiment-rh-goddard/nasm_A19650313000 https://arc.aiaa.org/doi/abs/10.2514/8.9928?journalCode=bais https://royalsocietypublishing.org/doi/10.1098/rsta.2017.0459 https://royalsocietypublishing.org/doi/pdf/10.1098/rspa.1919.0032 https://fivethirtyeight.com/features/space-communications-are-stuck-in-the-dial-up-age-which-means-its-time-for-more-lasers/ https://www.nasa.gov/mission_pages/LRO/news/mona-lisa.html http://www.w7ftt.net/laser2.html https://ieeexplore.ieee.org/abstract/document/4607894 https://www.spiedigitallibrary.org/conference-proceedings-of-spie/2699/1/Performance-evaluation-of-laser-communication-equipment-onboard-the-ETS-VI/10.1117/12.238434.short?SSO=1 https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=9743921 https://dataverse.jpl.nasa.gov/file.xhtml?fileId=53791&version=1.0 https://arxiv.org/pdf/2012.13166.pdf https://oceanservice.noaa.gov/facts/lidar.html https://spaceplace.nasa.gov/laser/en/ http://pluto.jhuapl.edu/News-Center/News-Article.php?page=20161027 https://imagine.gsfc.nasa.gov/science/toolbox/emspectrum1.html https://lunar.gsfc.nasa.gov/lola/ https://www.nasa.gov/audience/forstudents/postsecondary/features/F_X_Marks_the_Spot_prt.htm http://pluto.jhuapl.edu/Mission/Spacecraft.php Image Sources: https://commons.wikimedia.org/wiki/File:Le_Voyage_dans_la_Lune_(Georges_M%C3%A9li%C3%A8s,_1902).ogv https://commons.wikimedia.org/wiki/File:Dr._Robert_Goddard_at_Clark_University_(4479013489).jpg https://commons.wikimedia.org/wiki/File:Robert_Hutchings_Goddard_(1882-1945)_(4729466205).jpg https://www.gettyimages.com/detail/video/flight-through-star-field-stock-footage/485373891?adppopup=true https://www.gettyimages.com/detail/video/graphic-animation-light-diagram-with-invisible-visible-stock-footage/1464913948?adppopup=true https://commons.wikimedia.org/wiki/File:Announcer_Carl-Erik_Creutz_at_work_in_the_radio_studio,_1930s..jpg https://www.flickr.com/photos/geckzilla/52523099436/ https://commons.wikimedia.org/wiki/File:Encounter_01_lg.jpg https://www.gettyimages.com/detail/video/retro-antenna-broadcasting-signal-stock-footage/483615485?adppopup=true https://solarsystem.nasa.gov/resources/933/true-colors-of-pluto/?category=planets/dwarf-planets_pluto https://www.gettyimages.com/detail/video/flight-through-the-solar-system-to-the-earth-stock-footage/1350636672?adppopup=true https://www.gettyimages.com/detail/video/blue-laser-light-scanning-through-camera-on-black-stock-footage/950909080?adppopup=true https://commons.wikimedia.org/wiki/File:Amazing_stories_195103.jpg https://commons.wikimedia.org/wiki/File:Military_laser_experiment.jpg https://commons.wikimedia.org/wiki/File:TiSa_laser.jpg https://commons.wikimedia.org/wiki/File:Surveyor_NASA_lunar_lander.jpg https://www.gettyimages.com/detail/video/red-cat-plays-with-a-laser-pointer-on-a-wooden-floor-stock-footage/1298956800?adppopup=true https://global.jaxa.jp/projects/sat/ets6/index.html https://svs.gsfc.nasa.gov/11137 https://photojournal.jpl.nasa.gov/catalog/PIA25664 https://images.nasa.gov/details-210027_ASU_SESE_PsycheMission_ChartingAMetallicWorld_NoPsycheBadge_UHD2398


Click here to view video on YouTube.