The collapse was on Tuesday morning, but yesterday the NSF made video of the catastrophic collapse available, and so many viewers asked I continue my long tradition of 'coping by analyzing failure' and document what I see in this footage. It's hard to watch because this magnificent structure has always been part of the world of astronomy for me. For those that feel moved into action a starting point may well be this petition ask the White House to consider rebuilding the facility. https://petitions.whitehouse.gov/petition/rebuild-arecibo-observatory Juan R Costa's images of the structure after collapse are available on the NotiCel site, they're the best images of this: https://www.noticel.com/galeria/20201201/imagenes-aereas-exclusivas-del-colapso-del-observatorio-de-arecibo/ ... https://www.youtube.com/watch?v=59WQIRvezzI

Since I last covered Rodina 18 months ago a bunch of things have changed and improved. Still developed by a one man team, and still providing a seamless environment to explore. It's been available on steam early access, but you can still buy it from the developer's site. ... https://www.youtube.com/watch?v=6aS-U5OAuMQ

As a follow up to my accounting of Delta III failures I clarify that there are multiple ways to steer a Solid Rocket Thruster - some rockets use physically vectoring nozzles, others inject oxidizer asymmetrically into the exhaust. Finally some solid motors incorporate thrust termination systems which blow out panels in the side of the chamber that nullifies the thrust on cue. ... https://www.youtube.com/watch?v=YQx1V1mBxfc

Reentry is a low price simulator for people who really like being able to flip all the switches in space capsules. It's not a hardcore sim like Orbiter 2016, and it's still rough around the edges but it's already worth the money for people who want to jump straight into a historic space capsule and play around. Buy it on steam, or the developer's website http://reentrygame.com/ ... https://www.youtube.com/watch?v=aRJ9pG9pATc