Intro very early this morning we watched as four private astronauts were exposed to the vacuum of space with two members actually exiting the Dragon capsule besides a handful of Firsts one of the main mission goals was to test these space suits in the actual environment and gather as much data as possible for teams at SpaceX this combined with the process of depressurizing the Dragon capsule among other Milestones made for a successful and eventful Eva here I'll go more in depth into preparing Dragon for the hatch opening the spacewalk itself what's next and more [Music] First Commercial Spacewalk normally when a spacewalk happens on the ISS for example Crews use an air lock to isolate a small section of the station and depressurize it this allows everyone else who isn't participating to continue on paranormal on the dragon spacecraft there is no air lock once the hatch is opened the entirety of the crew cabin is exposed to the vacuum of space this means whoever is inside will need to be suited up and prepared in order for the crew and SpaceX to be ready for hatch opening they started preparing days in advance for example on the first day of the mission not long after lifting off the crew began a 2-day pre-breathe protocol here dragon's pressure slowly lowers while oxygen levels inside the cabin increase helping Purge nitrogen from the crew's bloodstreams the point of this is to help lower the risk of decompression sickness during The Space Walk the next major steps began just hours before the Eva between the live stream and updates from SpaceX directly they highlighted each of the necessary Milestones leading up to the spacewalk about an hour before opening the hatch all four crew members were suited up inside their Eva space suits which act almost like an individual spacecraft C during this entire process the crew had lines of communication between each other and teams at Mission Control helping direct and work through the mission not long after suiting up the secondary flow of oxygen was confirmed to be underway which primarily provides cooling to the suits throughout the spacewalk with that complete the suits were then switched to their primary flow path which they used to fully pressurize ahead of suit leak checks SpaceX then confirmed that the suit leak checks were complete and that the final pre-breathe was underway to help Purge all remaining nitrogen from the crew's bodies at that point dragon's cabin was at 8 PSI his pressure lowered ahead of the hatch opening at around 8 PSI they still needed to lower the pressure so they began venting from Dragon for around 10 minutes 21 minutes into the Eva operation and the PSI had gone down to four eventually dragon's cabin was below one PSI and the spacecraft repositioned its trunk to face the sun ahead of the Eva finally the hatch was opened marking the first time four humans were simultaneously exposed to the vacuum of space soon after isaacman was the first to exit the vehicle using what SpaceX calls Skywalker which are the additional bars for control and holding on to over the next 20 minutes he conducted a few Mobility tests before going back inside next Sarah Gillis made her way outside the spacecraft at 30 years old she's now the youngest human to complete a spacewalk similar to isaacman she also spent the time testing suit mobility and general operations BX clarified that there were three main suit Mobility tests meant to test overall hand body control vertical movement with Skywalker and foot restraint specifically there were quoted saying the first test focuses on using a single hand to control body movement the space Walkers will evaluate their ability to move in all directions hold a single position for 10 to 15 seconds and hold position while the other arm is simulating tool use the second test assesses the crew's ability to move up and down using Skywalker isaacman and Gillis will both use the horizontal and vertical bars engage their maximum reach and finally the third test evaluates using a foot restraint Jared and Sarah will gauge difficulty in getting in and out of the restraint how easily they can move their body the ease with which they can maintain position while handsfree or using tools and recovery from a single foot disengaging they said eventually after over an hour and a half of time spin on the Eva the hatch was finally closed from there repressurization of dragon was now underway teams raised the cabin pressure up to 8 PSI paused let the atmosphere equalize and then performed a cabin leak check prior to resuming repressurization all the way up to 14 PSI the entire process was estimated to take up to 50 minutes in another quote they said dragon uses pure nitrogen during repressurization which mixes with the pure oxygen being released into the cabin via the open loop system that keeps the Eva suits pressurized this process is unique to Dragon which acts as its own airlock they then finally confirm that dragon's cabinet pressure was now 14.6 PSI and the Nitro wash out was Still More Mission complete well the spacewalk was definitely the highlight of the mission there still are a few more days before the eventual re-entry and splash down there also are a handful of experiments that need to be completed in reality these began even before the Eva yesterday for example on flight Day 2 the crew conducted a series of activities on on orbit including time dedicated to science and research the crew focused on monitoring initial changes to eyesight and ocular health studying how fluid shifts and exposure to microgravity affect blood flow and assist how medications are processed by the body while on orbit tomorrow on the fourth day they plan to complete a starlink demonstration specifically the plon crew is mentioned transmitting a message down to earth using spacex's constellation of Internet satellites they'll be the first crew to test starlink laser based Communications in space which SpaceX believes will provide valuable data for future space communication systems on day five the crew will be busy preparing for the journey back home and eventual Landing this leads us to day six where they're set to return to Earth that will include deorbit Burns Earth re-entry and eventually a splash down off the coast of Florida the mission did experience quite a few weather delays leading up to launch but they eventually found a clearing for both the launch and Landing time frame over the next few days we should expect more updates from the crew as they get closer to this final mission Milestone with the Eva complete SpaceX now has much more information on the performance of their new suits well it seems they performed very well the company will now likely talk to the crew and figure out what areas they like and what changes they could make SpaceX will definitely be upgrading this technology over time to make it even more comfortable and usable Eva space suits are complex and the nature of their design limits Mobility among other general motor functions the more data and experience the company gets the more fine tune the design will get as well at the end of the day these suits were upgraded from the current injury vehicular or Iva suit in a statement the company said evolved from the Iva suit the Eva suit looks s similar but provides greater Mobility a state-of-the-art helmet heads up display and Camera new thermal management textiles materials borrowed from Falcon's in stage and dragon's trunk SpaceX points out that all of these enhancements to the Eva suit are part of a scalable design allowing teams to produce and scale to different body types SpaceX seeks to create greater accessibility to space for all of humanity before the launch the crew worked with the suits and SpaceX to get a better understanding of how the space suit performs in a vacuum gather a collection of space suit and biometric data to assess the overall system performance in a flight environment and even insight into the various thermal States expected throughout the spacewalk among others SpaceX is quoted saying building a base on the moon and a city on Mars will acquire millions of space suits the development of the suit and the execution of the spacewalk will be important steps toward a scalable design for space suits on future long duration missions as life becomes multiplanetary they said it's clear they have some ambitious plans for the future only a few days ago musk tweeted saying the first Starships Tom Mars will launch in 2 years when the next Earth Mars transfer window opens these will be un crude to test the reliability of Landing intact on Mars if those Landings go well then the first crude flights to Mars will be in four years flight rate will grow exponentially from there with the goal of building a self-sustaining City in about 20 years being multiplanetary will vastly increase the probable lifespan of Consciousness as we will no longer have all our eggs literally and metabolically on one planet while musk is known to have some ambitious timeline estimates that should be taken with a grain of salt it's clear what the company is aiming for they believe these suits in the first commercial spacewalk are some of the the first steps toward this future early this morning on flight day three the four crew members of the Polaris Dawn Mission were exposed to the vacuum of space after opening the hatch here Isaac Min and Gillis made their way outside the vehicle separately to conduct a handful of tests in the future we can likely expect more missions like these SpaceX Works to continue upgrading the technology we will have to wait and see how it progresses and the impact it has on the space industry thank you very much for watching