SpaceX's Polaris Dawn Crew Returns to Earth After Historic Spacewalk (cnn.com)
(Sunday September 15, 2024 @04:56PM (EditorDavid)
from the welcome-home dept.)
- Reference: 0175001855
- News link: https://science.slashdot.org/story/24/09/15/1846218/spacexs-polaris-dawn-crew-returns-to-earth-after-historic-spacewalk
- Source link: https://www.cnn.com/2024/09/15/science/spacex-polaris-dawn-splashdown-landing/index.html
"It is with great relief that I welcome you home!" SpaceX COO Gwynne Shotwell [1]posted on X . "This mission was even more extraordinary than I anticipated."
"SpaceX's Polaris Dawn crew is home," [2]reports CNN , "capping off a five-day mission to orbit — which included the world's [3]first commercial spacewalk — by splashing down in the Gulf of Mexico."
> The Crew Dragon capsule carrying four astronauts landed off the coast of Dry Tortugas, Florida, at 3:37 a.m. ET Sunday.
>
> The Polaris Dawn mission [4]made history as it reached a higher altitude than any human has traveled in five decades. [870 miles (1,400 kilometers) — beating the 853-mile record set in 1966 by NASA's Gemini 11 mission.] A spacewalk conducted early Thursday morning also marked the first time such an endeavor has been completed by a privately funded and operated mis.sion.
>
> But returning to Earth is among the most dangerous stretches of any space mission. To safely reach home, the Crew Dragon capsule carried out what's called a "de-orbit burn," orienting itself as it prepared to slice through the thickest part of Earth's atmosphere. The spacecraft then reached extremely hot temperatures — up to 3,500 degrees Fahrenheit (1,900 degrees Celsius) — because of the pressure and friction caused by hitting the air while still traveling around 17,000 miles per hour (27,000 kilometers per hour). The crew, however, should have remained at comfortable temperatures, protected by the Crew Dragon's heat shield, which is located on the bottom of the 13-foot-wide (4-meter-wide) capsule. Dragging against the air began to slow the vehicle down before the Crew Dragon deployed parachutes that further decelerated its descent. Having hit the ocean, the spacecraft briefly bobbed around in the water until rescue crews waiting nearby hauled it out of the ocean and onto a special boat, referred to as the "Dragon's nest." Final safety checks took place there before the crew disembarked from the capsule and began the journey back to dry land.
You can [5]watch video of the splashdown on YouTube .
While in space, the crew performed 40 science experiments and research, according to the article. "Gillis, a trained violinist, also brought her instrument along for the mission and [6]delivered a rendition of 'Rey's Theme' from "Star Wars: The Force Awakens."
SpaceX's COO said the performance "made me tear up. Thank you all for taking this journey."
[1] https://x.com/Gwynne_Shotwell/status/1835327126213689774
[2] https://www.cnn.com/2024/09/15/science/spacex-polaris-dawn-splashdown-landing/index.html
[3] https://www.cnn.com/2024/09/14/science/spacex-polaris-dawn-spacewalk-historic-milestone/index.html
[4] https://www.cnn.com/2024/09/10/science/spacex-polaris-dawn-mission-height-apogee/index.html
[5] https://www.youtube.com/watch?v=cthjJdniQlM
[6] https://x.com/polarisprogram/status/1834557770374296010?s=46&t=uixpUscDokBAQ414CZLRlg
"SpaceX's Polaris Dawn crew is home," [2]reports CNN , "capping off a five-day mission to orbit — which included the world's [3]first commercial spacewalk — by splashing down in the Gulf of Mexico."
> The Crew Dragon capsule carrying four astronauts landed off the coast of Dry Tortugas, Florida, at 3:37 a.m. ET Sunday.
>
> The Polaris Dawn mission [4]made history as it reached a higher altitude than any human has traveled in five decades. [870 miles (1,400 kilometers) — beating the 853-mile record set in 1966 by NASA's Gemini 11 mission.] A spacewalk conducted early Thursday morning also marked the first time such an endeavor has been completed by a privately funded and operated mis.sion.
>
> But returning to Earth is among the most dangerous stretches of any space mission. To safely reach home, the Crew Dragon capsule carried out what's called a "de-orbit burn," orienting itself as it prepared to slice through the thickest part of Earth's atmosphere. The spacecraft then reached extremely hot temperatures — up to 3,500 degrees Fahrenheit (1,900 degrees Celsius) — because of the pressure and friction caused by hitting the air while still traveling around 17,000 miles per hour (27,000 kilometers per hour). The crew, however, should have remained at comfortable temperatures, protected by the Crew Dragon's heat shield, which is located on the bottom of the 13-foot-wide (4-meter-wide) capsule. Dragging against the air began to slow the vehicle down before the Crew Dragon deployed parachutes that further decelerated its descent. Having hit the ocean, the spacecraft briefly bobbed around in the water until rescue crews waiting nearby hauled it out of the ocean and onto a special boat, referred to as the "Dragon's nest." Final safety checks took place there before the crew disembarked from the capsule and began the journey back to dry land.
You can [5]watch video of the splashdown on YouTube .
While in space, the crew performed 40 science experiments and research, according to the article. "Gillis, a trained violinist, also brought her instrument along for the mission and [6]delivered a rendition of 'Rey's Theme' from "Star Wars: The Force Awakens."
SpaceX's COO said the performance "made me tear up. Thank you all for taking this journey."
[1] https://x.com/Gwynne_Shotwell/status/1835327126213689774
[2] https://www.cnn.com/2024/09/15/science/spacex-polaris-dawn-splashdown-landing/index.html
[3] https://www.cnn.com/2024/09/14/science/spacex-polaris-dawn-spacewalk-historic-milestone/index.html
[4] https://www.cnn.com/2024/09/10/science/spacex-polaris-dawn-mission-height-apogee/index.html
[5] https://www.youtube.com/watch?v=cthjJdniQlM
[6] https://x.com/polarisprogram/status/1834557770374296010?s=46&t=uixpUscDokBAQ414CZLRlg
Amazing (Score:2)
by 50000BTU_barbecue ( 588132 )
Let the era of private exploration of the near vacuum at 400km altitude commence! Truly a historic era.
s/exploration/exploitation (Score:1)
by mmell ( 832646 )
It's okay - it's a step forward which our species on the whole must do - but let's not idolize this batch. These guys don't have "the right stuff", just the right financial backing.
"Rey's Theme" rendition cooler than summary says (Score:3)
The "Rey's Theme" rendition was not just the astronaut playing violin in space, but was in conjunction with young adult orchestras around the world! Just the kind of thing to get kids excited about space again. Well worth watching, it's just a few minutes long.
The whole mission had a NASA vibe from decades ago when part of what they were doing was trying to show people how cool space was. They also had a short video where they reached described their favorite experiments they were doing on board.
Really glad they all made it home OK. Even now with space seeming so routine you can't always count on that.
That's not the NASA I remember. (Score:4, Interesting)
NASA took what they were doing seriously. Conspiracy theorists to the contrary, they did not perform stunts for public consumption. What they did was more than enough to rivet the attention of the entire planet, all by itself.
Re: (Score:1)
they did not perform stunts for public consumption.
Except for that whole moon thing.
Re: That's not the NASA I remember. (Score:2)
And the fact we have not gone back in 50 years proves it was nothing. Itâ(TM)s than a stunt.
This was a serious flight too (Score:3, Insightful)
NASA took what they were doing seriously. Conspiracy theorists to the contrary, they did not perform stunts for public consumption.
True but that is exactly what SpaceX was doing here. This was not a "stunt". This was a lot of real science and all through the spacewalk the people going outside were spending about the whole time doing suit mobility checks. There was more science being done on-board including more advanced physiology monitoring than has been done before, because there is more advanced medic
What did they learn from . . . (Score:2)
Maneuvering into a polar orbit? Conducting an all-or-nothing EV/spacesuit test with four test subjects? Traversing the Van Allen radiation belts (it's long been known that a sheet of tinfoil is more than adequate defense against the zone of intense alpha and beta radiation)?
Re: (Score:1)
It's a brand new suit design built to be more generic and also more flexible... If you can't understand the importance of that you probably should cease making comments showing how little you know about the space industry and the challenges it faces.
It was BTW also the first time four people have been exposed simultaneously to a hard vacuum of space. Which you obviously didn't know either as you called it out specifically as normal and everyday.
Also a lot of the medical stuff they were testing is more adv
Re: (Score:2)
Are you joking? If not, your memory is way off. The videos of people playing in zero g? All the newsworthy quotes that were clearly rehearsed? Astronauts jumping across the moon surface? Last century, NASA was certainly serious about what it was doing, but they engaged in PLENTY of media-focused activities.
And that’s a good thing. We’re not robots or serfs. It’s smart to show people that their taxpayer dollars are being used on stuff thats both technically important AND cool.
This sp
Re: (Score:1)
No, my memory is quite intact. NASA never sent anybody to the moon with the express purpose of having them jump across its surface. That's just the kind of thing that happens where humans are involved. This flight was nothing more than an extra episode of " Lifestyles of the Rich and Shameless ".
Re: That's not the NASA I remember. (Score:2)
You are free to think that. But, this was a real mission, with real science. From testing the space suits, to research on Spaceflight Associated Neuro-ocular Syndrome, to communications, and even motivating others on Earth. They spent significant amounts of time training. They accepted the risk. And expanded the envelope of space exploration. I believe thatâ(TM)s all pretty good.
Re: (Score:2)
Except, of course, for testing brand new EVA suits out of a craft never used for EVA before, conducting a number of scientific experiments, etc...
NASA paid attention because they want things like new EVA suits, the opportunity to go EVA away from the ISS, etc...
Re: (Score:1)
> NASA took what they were doing seriously.
You have to be next level retarded to think that getting to space faster and better than everyone else demonstrates anything other than extreme seriousness.
Anyway you're also objectively wrong, as each astronaut did their own stunt on the moon. Golfing (Apollo 14), dropping a hammer vs. feather (Apollo 15), quoting scripture (various), doing unnecessary high leaps to show off for the camera (Apollo 16). So doubly retarded.
And what do you call this? [1]https://www.yo [youtube.com]
[1] https://www.youtube.com/watch?v=TdHPr9fLxgg