What We Learned from Challenger and Columbia

Late January and early February are the anniversaries of two of the most disastrous events in the history of spaceflight. What did we learn from these events, and how do we move forward? Hosted by: Hank Green ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Justin Lentz, David Campos, Chris Peters, Philippe von Bergen, Fatima Iqbal, John Murrin, Linnea Boyev, and Kathy & Tim Philip. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/SciShow Or help support us by becoming our patron on Patreon:   / scishow   ---------- Looking for SciShow elsewhere on the internet? Facebook:   / scishow   Twitter:   / scishow   Tumblr:   / scishow   Instagram:   / thescishow   Sources: http://engineer.jpl.nasa.gov/practice... http://science.ksc.nasa.gov/shuttle/m... http://science.ksc.nasa.gov/shuttle/m... http://www.nbcnews.com/id/11031097/ns... http://www.popularmechanics.com/space... http://er.jsc.nasa.gov/seh/explode.html http://articles.latimes.com/2003/feb/... http://www.space.com/19526-columbia-s... http://www.space.com/19403-nasa-space... http://www.space.com/19436-columbia-d... Image Sources: https://commons.wikimedia.org/wiki/Fi... https://commons.wikimedia.org/wiki/Fi... https://en.wikipedia.org/wiki/Space_S... https://commons.wikimedia.org/wiki/Fi... https://en.wikipedia.org/wiki/Space_S... https://commons.wikimedia.org/wiki/Fi... https://commons.wikimedia.org/wiki/Fi... https://commons.wikimedia.org/wiki/Ca... https://commons.wikimedia.org/wiki/Fi... https://en.wikipedia.org/wiki/Hubble_... https://en.wikipedia.org/wiki/Hubble_... https://en.wikipedia.org/wiki/Spacecraft https://en.wikipedia.org/wiki/Dragon_... https://commons.wikimedia.org/wiki/Fi...