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Spacewalking is the new domain of the super rich as a billionaire makes first private attempt

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 (AP) — First came space tourism. Now comes an even bigger thrill for the monied masses: spacewalking.

The stage is set for the first private spacewalk Thursday. Tech billionaire Jared Isaacman will pop out of the hatch of his orbiting SpaceX capsule, two days after blasting off from Florida on a chartered flight that lifted him and his crew higher than anyone since NASA’s moonwalkers. He partnered with SpaceX CEO Elon Musk to buy a series of rocket rides and help develop brand-new spacesuits.

SpaceX is the first private company to attempt a spacewalk, until now the domain of just 12 countries. There’s a reason why it’s such a niche and elite group: Spacewalking is considered the most dangerous part of any flight after launch and reentry and demands extensive training.

“Spacewalks are a whole different entire ballgame than just strapping into a rocket and riding it, getting some zero-g time, and coming back,” said retired NASA astronaut Chris Cassidy.

Cassidy knows firsthand about the dangers of spacewalking: He was working outside the International Space Station in 2013 when his partner, Italian astronaut Luca Parmitano, almost drowned. Parmitano’s helmet filled with water from his cooling garment, and he barely made it back inside in time. Another 30 minutes that day and “the answer might be different,” Cassidy said.

Cassidy worries there’s “a slippery slope” where the wealthy could try to jump to the front of a spacewalking line with minimal training.

Risk and disaster analyst Ilan Kelman of University College London said it’s “appropriate and inevitable” that non-professionals will end up performing spacewalks. But he anticipates fatalities along the way.

“We can and should do plenty to reduce the risk,” said Kelman. “We must be entirely honest with anyone participating, especially the low chance of rescue when something major goes wrong.”

This spacewalk attempt won’t be like what routinely happens at the International Space Station where astronauts float out to do repairs. Isaacman and SpaceX engineer Sarah Gillis will venture just barely outside the capsule as they soar about 450 miles (more than 700 kilometers) above Earth. Their orbit was initially twice that high but reduced for the spacewalk.

Besides being new to spacewalking, the crew of four will test suits fresh off the factory floor. All will be exposed to the vacuum of space since the Dragon capsule, unlike larger space vehicles, lacks an airlock.

For Isaacman, throwing away the cabin atmosphere and then restoring it is the riskiest part of the endeavor.

“You can’t afford to get anything wrong along that journey or you sidetrack it,” Isaacman said. “We’re going out just long enough to do what we need to do to get the data.”

The bulk of their training over the past two years has focused on the spacewalk, the highlight of their planned five-day flight. SpaceX put considerable preparation and testing into the capsule and suits, said SpaceX’s Bill Gerstenmaier, a former NASA manager.

For safety, Isaacman and Gillis will always keep a foot or hand on the capsule or the ladder-like support that they’ll position above the hatch. They will be tethered to 12-foot (3.6-meter) lines, but there will be no dangling at the end of them.

The duo will take turns emerging from the hatch, each spending 15 to 20 minutes outside as they flex and test their suits. Their crewmates — SpaceX engineer Anna Menon and former Air Force Thunderbird pilot Scott “Kidd” Poteet — will monitor the spacewalk from inside.

The entire spacewalk should last no more than two hours. Isaacman has refused to say how much he invested in the flight.

To date, 263 individuals representing a dozen countries have performed spacewalks, according to NASA statistics, led by Soviet cosmonaut Alexei Leonov in 1965 with NASA’s Ed White close behind.

China, the only other country to launch its own citizens into space, joined the spacewalking club in 2008. Europe, Japan, Canada, and the United Arab Emirates also have seen their astronauts float outside, but always in NASA or Russian garb and under NASA or Russian control.

With SpaceX intent on getting people to the moon and Mars, “we need to start somewhere and the first step is what we’re doing on this mission,” Gillis said.

Billionaire Jared Isaacman and SpaceX engineer Sarah Gillis completed the first privately funded spacewalk Thursday — a critical aspect of a risky, somewhat troubled mission designed to test new SpaceX technology, gather valuable data about high-altitude space travel, and generally push the limits of space exploration.

The mission, called Polaris Dawn, was supposed to launch in late August but was grounded due to safety concerns. But on Tuesday, Isaacman and Gillis — along with two other crew members, former Air Force pilot Scott Poteet and SpaceX engineer Anna Menon — finally took off.

Since then, the astronauts have gone about 870 miles from Earth, which makes Polaris Dawn the farthest crewed space mission since the Apollo 17 mission to the moon in 1972. They came closer to Earth — away from the high radiation levels they faced at the furthest point of their journey — for Thursday’s spacewalk.

“Back at home, we all have a lot of work to do, but from here, Earth sure looks like a perfect world,” Isaacman said, observing the planet from outside his SpaceX Crew Dragon spacecraft Thursday.

Though the spacewalk is complete, the astronauts aren’t done. Their mission is set to last five days — much shorter than typical NASA missions which can last weeks or months — but still includes dozens of experiments, and, critically, safely reentering the Earth’s atmosphere.

Why is SpaceX’s Polaris Dawn mission so groundbreaking?

SpaceX’s current mission is supposed to be the first of three Polaris missions, all funded by Isaacman and SpaceX, Elon Musk’s aerospace company.

The goal of the Polaris mission series is to help SpaceX develop the skills and technology needed to achieve its longer-term goal of sending humans to Mars. The company hoped this first mission would be a useful test of the spacecraft and its instruments’ ability to survive the extreme conditions of space, particularly as it passes through the Van Allen radiation belts, regions in space that encircle the planet and are highly radioactive. They were detected on the first US space mission in 1958, and their highly charged, energetic particles can damage spacecraft instruments.

The crew traveled through the Van Allen belts on their way to the furthest point in their journey, and, so far, the tech aboard the capsule — and the astronauts — seem to have withstood that radiation.

The trip was also a test of SpaceX’s latest spacesuit designs, which were designed in just two and a half years — an astonishingly quick turnaround by space exploration standards — and are meant to be upgrades to the bulky suits NASA has made famous. Rather than having life support systems integrated into the suit, like in NASA’s, Space X’s new suits connect to a spacecraft via a tube — all of the Polaris Dawn astronauts used that functionality to breathe while Isaacman and Gillis performed their spacewalk.

That’s because though only Isaacman and Gillis exited the craft, all four astronauts were exposed to space (and that means, technically, all four astronauts completed a spacewalk). To complete the spacewalk, Isaacman and Gillis had to open the Crew Dragon’s hatch to exit, exposing everyone inside to a vacuum. Though that was once the preferred way for astronauts to leave their spacecraft, modern astronauts usually exit via an airlock mechanism, which has two doors separated by a chamber so that the vacuum of space doesn’t enter into the spacecraft.

Exiting through the hatch appeared to be a success, and could be something future missions emulate to avoid the need for airlocks. During the walk — which saw Isaacman and Gillis holding onto a specialized ladder leading out of the crew capsule rather than floating freely through space — the astronauts completed a series of tests meant to check the maneuverability and functionality of the suits.

The suits were a particular area of focus for this mission not just because they are new, but because SpaceX sees getting an inexpensive, reliable spacesuit design down pat as being key to its long-term mission of supporting mass human colonization of space.

“Building a base on the Moon and a city on Mars will require millions of spacesuits; the development of this suit and the execution of the EVA will be important steps toward a scalable design for spacesuits on future long-duration missions,” the company wrote on its website.

In their final days in space, the astronauts will do other experiments meant to support that long-term goal, including some related to motion sickness and some focused on communications tests involving SpaceX’s Starlink satellites. On Earth, those are used to provide internet service, particularly to remote locations; the astronauts will do some initial tests to check the satellites’ usefulness in communicating from space.

After those are complete, all that will be left is reentry — historically one of the most dangerous parts of spaceflight. It was during reentry that NASA’s Columbia space shuttle was destroyed in 2003.

Once back, the astronauts will have completed a historic mission full of firsts: the first private spacewalk, the most astronauts spacewalking at once, and Menon and Gillis will be the only women ever to travel such a distance from Earth.

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