It's an often told story about Apollo 12 getting struck by lightning, crippling the command module in flight and John Aaron in mission control figuring out the exact switch to flip to fix the stricken vessel and save the day. It's an understandably popular story, but the details are never quite right, so this is my attempt to explain what exactly went wrong and what problems SCE-to-AUX fixed. Here's a few of the references I used to understand what happened: Apollo 12 Flight Journal https://history.nasa.gov/afj/ap12fj/01launch_to_earth_orbit.html Apollo 12 Mission Control https://history.nasa.gov/alsj/a12/A12_MissionReport.pdf Apollo 12 Saturn V Performance https://history.nasa.gov/afj/ap12fj/pdf/a12-saturn-v-fer.pdf John Aaron Interview for NASA Oral history Project https://historycollection.jsc.nasa.gov/JSCHistoryPortal/history/oral_histories/AaronJW/AaronJW_1-18-00.htm Apollo 12 Technical Debrief https://www.hq.nasa.gov/alsj/a12/a12-techdebrief.pdf Apollo Command Module User Manual - Telecoms Subsystem http://apollo.josefsipek.net/ApolloProjectOnline/Documents/SMA2A-03-BLOCK%20II%20Volume%201%2019691015/aoh-v1-2-08-telecoms.pdf Analysis of Apollo 12 Lightning Incident https://spaceflight.nasa.gov/outreach/SignificantIncidents/assets/analysis-of-apollo-12-lightning-incident.pdf Scott Schneeweis Collection of Apollo Hardware: http://www.spaceaholic.com/index.php/Detail/Object/Show/object_id/42 ... https://www.youtube.com/watch?v=k4TXNZW3JBo

On the trail of a cloaking device we encounter the Spemin, Veloxi and Gazurtoid. ... https://www.youtube.com/watch?v=GQR4kw29OQg

Astrobotic's recent lunar mission had a few advertising partnets, Pocari Sweat and DHL were the most visible, and while many people expressed surprise at this, they were even more surprised to find out this kind of thing has been going on for over 30 years. Follow me on Twitter for more updates: https://twitter.com/DJSnM I have a discord server where I regularly turn up: https://discord.gg/zStmKbM If you really like what I do you can support me directly through Patreon https://www.patreon.com/scottmanley ... https://www.youtube.com/watch?v=IE0WyH15BCQ

The RD-180 is an exceptionally good engine, and a big part of that is down to it having a closed combustion cycle, compared to US designed engines which use an open cycle. Why did the US never develop a closed cycle Kerolox engine, and what problems did the soviet engineers solve decades ago. ... https://www.youtube.com/watch?v=oGr1UVNBDLs