The space station is showing its age after housing people for 20 years. Companies are already designing new space habitats to take its place.
- Monday marked the 20th anniversary of continuous human presence on the International
- During that time, the station has hosted over 240 crew members and 3,000
- But the space station is getting old and may be retired in the next 10 years.
- Private companies are developing new orbiting space habitats that could be roomier.
On Monday, the world celebrated 20 years of continuous human presence in space. Astronauts and cosmonauts have lived aboard the International Space Station without a break since November 2, 2000.
Over those 7,300 days, the $150 billion orbiting laboratory has hosted 241 people from 19 countries, and more than 3,000 scientific experiments have been conducted there.Still, all good things must come to an end.
Some of these companies, like Axiom Space and Bigelow Aerospace, hope to build on the ISS's success by adding extensions to the station that could eventually be removed to orbit as their own habitats. Others, like
The ISS is getting oldThe station has already outlived its life expectancy of 15 years. In the last few months alone, the station's Russian side has seen a toilet go bust, an oxygen-supply system break down, and an air leak grow larger.
"All modules of the Russian segment are exhausted," Gennady Padalka, a cosmonaut, told RIA Novosti in October.These issues aren't enough to compromise the station's integrity for now, but are warning signs of deterioration. "I think it's an incredibly reliable and a robust system," Kate Rubins, a NASA astronaut currently on the ISS, said during a press call last month.
But the prospect of the space station's looming retirement already has private companies competing to develop worthy successors.
Some companies will start by building attachments to the ISS
Axiom Space, a private aerospace company based in Houston, Texas, aims to build the first commercial space station. Founded in 2016, Axiom has already received a contract from NASA to build at least one new livable commercial module to add to the existing space station. Then once the ISS retires, that module, along with any others that Axiom has added in the intervening years, would theoretically detach to become an independent orbital outpost.Another company with similar aspirations is Bigelow Aerospace, which was founded by real estate billionaire Robert Bigelow in 1999. The business has already sent a working prototype of its inflatable ISS module to space — the Bigelow Expandable Activity Module, or BEAM, has been attached to the station since 2016. It's currently used for storage.
But Bigelow is designing a new version of the habitat at its facilities in Las Vegas, Nevada, that is far bigger and more ambitious than the first. The latest model, called the B330, has 11,650 cubic feet of internal volume (330 cubic meters, hence its name. That's roughly the size of an 1,165-square-foot apartment with 10-foot ceilings.
"Equipped with two galleys, two toilets, enormous cargo space, and two dissimilar propulsion systems, this is the ideal habitat for a long-duration space mission," Bigelow said in a statement in September 2019. "This large space station can accommodate four people indefinitely and five people for many months."Eventually, Bigelow hopes some version of the B330 could house astronauts journeying to Mars.
The eventual goal, she added, is "replacing the existing space station with a new capability."
Blue Origin envisions 'fundamentally different' space habitatsWhile corporations like Bigelow and Axiom are using the ISS as a starting point for space habitats that could eventually become independent stations, others, like Blue Origin, are already working on standalone orbital habitats.
That company, owned by Amazon billionaire Jeff Bezos, envisions habitats far roomier and more luxurious than the ISS. A job posting from Blue Origin in September suggested that even its early stations would be "fundamentally different from 'exploration' habitats designed for small, professionally trained crews in deep space."In the long term, Bezos envisions massive habitats across the solar system that could house a space-based economy of millions of workers, allowing heavy industry to move off our planet. The environments inside these habitats would simulate Earth's gravity and most ideal weather. "This is Maui on its best day, all year long," Bezos said in May 2019, according to The Guardian. "No rain. No earthquakes. People are going to want to live here."
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