The International Space Station (ISS) is nearing the end of its historic journey, and the race to create its successor is in full swing. One of the most interesting backers comes from SpaceX, which has proposed repositioning its massive Starship spacecraft as an extra-generation space station. Meanwhile, a rising private company, Vast, is taking ambitious steps to deliver innovative commercial space stations. Together, these two players could reshape the future of orbital research, space tourism, and human space habitability.    

ISS retirement: a new era begins

For 24 years, the ISS has been a hub for space exploration that has fostered scientific breakthroughs and international collaboration. However, as its retirement approaches, questions have arisen about the future of human presence in low Earth orbit (LEO). Without a replacement,  China’s Tiangou Station  could remain the only operational space station, giving China a competitive advantage in the space race.

To address this problem, NASA has launched initiatives such as the  Commercial Space Capabilities Collaboration (CCSC) program  , which partners with private American companies to develop new space stations. Among these collaborators,  SpaceX  and  Vast  are taking the lead with bold, futuristic concepts.

SpaceX: The spaceship as a space station

While most competitors choose to build space stations from scratch,  SpaceX  has proposed a cooperative approach: transforming its  Starship spacecraft  into a fully functional orbital station. This approach leverages Starship’s size, reusability, and cutting-edge technology to deliver a cost-effective and adaptable solution for operations in low-Earth orbit.

A design by Giaпt Leap

SpaceX’s Starship is a massive vehicle. At  50 meters tall  and  9 meters in diameter  , its interior volume already exceeds that of the International Space Station. Future iterations, such as  Starship V3  , will further expand its capacity. Originally designed for multi-day missions to Mars, Starship is ideally suited to housing living quarters, workspaces, and scientific equipment — key features of any space station.

What sets Starship apart is its  stainless steel structure  , which offers exceptional durability, corrosion resistance, and protection from micrometeorite impacts. These qualities make it ideal for the harsh conditions of space.

Reυsability: Α Game-Chaпger

Unlike traditional space stations, Starship’s reusability is a significant advantage. Its ability to return to Earth for maintenance and refurbishment could dramatically reduce long-term operating costs. This is in line with SpaceX’s mission to make space travel more affordable and sustainable.

Artificial gravity and modular design

SpaceX’s vision includes joining multiple spacecraft together in a circular, rotating configuration to  generate  artificial gravity through centrifugal force. This innovative design could counteract health risks associated with microgravity, such as bone density loss and muscle atrophy, while offering astronauts a more comfortable and productive environment.

Challenges ahead

While the concept is innovative, several challenges remain. Starship would need significant modifications to become a permanent orbital station, such as the addition of  solar panels  ,  docking ports  , and advanced life support systems. Relocating structural components, such as propellers, would also involve complex and unusual technological changes in orbit.

However, with NASA’s support and SpaceX’s experience in achieving the seemingly impossible, the dream of a Starship-based space station could one day become a reality.

Vasto: a rising star in space habitation

While SpaceX focuses on redeploying Starship,  Vast  , a private aerospace company based in Long Beach, California, is building modular space stations from the ground up. Led by CEO  Max Haot  , Vast has quickly emerged as a major player in the race to replace the ISS.

Haveп 1: The first step

Vast’s initial project,  Haveп 1  , is set to launch before  August 2025  aboard a SpaceX Falcon 9 rocket. Designed as a compact, luxury space station, Haveп 1 will be intended for both scientific research and commercial space tourism. Its inaugural mission,  Vast-1 , will host four astronauts for a 30-day stay using SpaceX’s Dragoп Crew  spacecraft   .

While Vast 1 is not built for long-term autonomy and will rely on Drago crew life support systems, it serves as a crucial test of Vast’s larger ambitions.

Haveп 2: A graphical view

Vast’s second project,  Haveп 2  , represents a major leap forward. Scheduled to begin deployment in  2028, Haveп 2 will feature a  state-of-the-art microgravity research laboratory  , advanced space manufacturing capabilities, and modern astronaut living quarters.

The first module, to be launched aboard a  Falcon Heavy  , will be 5 meters long and have docking ports at both ends to allow for future expansion. By 2030, Vast plans to add a  7-meter-diameter core module  equipped with essential systems such as an airlock, robotic arms and propulsion units.

Haveп 2 will combine  cutting-edge research facilities  with luxury amenities, including  Starliпk connectivity  and large observation windows for stunning views of Earth, features intended to attract space tourists.

The alliance with SpaceX: the key to success

Vast’s ambitious goals are closely tied to its collaboration with SpaceX. Both Have 1 and Have 2 will be based on SpaceX launch vehicles, including  Falco 9  ,  Falco Heavy  , and potentially  Starship  for future core module deployments. This partnership provides Vast with reliable and cost-effective access to orbit, while strengthening SpaceX’s position in the commercial space habitat.

Vast CEO Max Haot stressed the importance of this collaboration:  “We are trying to be as close as possible as partners, as much as they allow us to be.”

The future of space habitability

As the ISS nears retirement, the competition to build its successor intensifies. SpaceX’s Starship offers an innovative and adaptable solution with its massive size, reusability, and cutting-edge design. Meanwhile, Vast’s Have 1 and Have 2 represent a commercially focused vision, combining research capabilities with space tourism.

With NASA’s support and partnerships like the one established between  VAST  and  SpaceX  , the future of space habitability looks brighter than ever. These next-generation space stations promise to redefine humanity’s current orbit, paving the way for scientific advancements, economic opportunities, and unprecedented access to space.

The space race is far from over, and as private companies race to push the boundaries, the world looks with anticipation to what comes next.

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