Space travel is no longer a far-off dream, but it’s not quite routine either. More than 120 people have already flown on commercial suborbital flights, astronauts are preparing to orbit the Moon again within months, and the first private space stations are on track for 2027. Yet serious biological and economic hurdles remain before space travel becomes accessible to anyone beyond the ultra-wealthy or professionally trained.
Where Space Tourism Stands Right Now
Blue Origin and Virgin Galactic have collectively flown 122 unique passengers on suborbital flights, brief trips that cross the edge of space before returning to Earth. That sounds like progress, and it is. But both companies have paused flights, and the economics are brutal. Virgin Galactic found that flying once a month didn’t generate enough revenue to cover costs. The company hopes to resume flying its current ticket holders in 2027.
The core problem is a market that’s simultaneously too expensive for most people and too cheap for the companies to profit. Tickets cost hundreds of thousands of dollars, yet analysts say even those prices don’t cover operating expenses. As one Rutgers University professor put it, the real market is “rich people that were also adrenaline junkies,” a group you can count on a few hands. Virgin Galactic has estimated that flying 125 flights per year could bring in $450 million annually, but reaching that cadence is a major operational challenge they haven’t come close to solving.
Private Space Stations Are Coming
The International Space Station is aging, and NASA is counting on private companies to build its replacements. Two leading efforts are well underway. Vast, a newer company, has completed cleanroom integration of Haven-1, a single-module station set to launch on a SpaceX Falcon 9 in 2027. Axiom Space is building a multi-module station that will initially attach to the ISS before eventually undocking to fly on its own, with its first module also targeting a 2027 launch.
These stations will serve as destinations for both government astronauts and private visitors, creating an infrastructure layer that doesn’t exist today. If they launch on schedule, the late 2020s could see multiple places to visit in low Earth orbit for the first time.
Returning to the Moon
NASA’s Artemis program is the most concrete plan for sending humans beyond low Earth orbit. Artemis II, a crewed flyby of the Moon (no landing), is preparing for launch in 2025, with the rocket and spacecraft already moved to the Vehicle Assembly Building for final preparations. If that mission succeeds, Artemis III will follow in 2027, though it has been restructured. Rather than landing on the lunar surface, Artemis III will now test systems and operations in low Earth orbit. The actual landing has been pushed to Artemis IV, currently targeted for 2028.
These dates have shifted multiple times already, so further delays are possible. But the hardware exists, crews are assigned, and the program is funded. A human landing on the Moon by the end of this decade is a realistic, if not guaranteed, outcome.
The Mars Question
Mars is where timelines get speculative. SpaceX’s Elon Musk has outlined a step-by-step approach: five uncrewed Starships launching in 2026 during the next Earth-Mars alignment window, arriving at Mars in 2027 carrying Tesla’s Optimus robots to begin surveying the surface. If those land successfully, another 20 Starships would launch in 2028, with most carrying more robots to set up infrastructure and at least one carrying human passengers, potentially arriving as soon as 2029.
Musk himself has acknowledged these dates are ambitious, and his Mars timelines have slipped repeatedly over the years. Starship is still in the testing phase. Even so, the scale of what SpaceX is attempting is unprecedented. No other organization, government or private, has a comparable plan with hardware in active development.
Faster Engines for Deep Space
Getting to Mars faster would reduce many of the risks involved. NASA and DARPA are collaborating on a nuclear thermal rocket engine, with a demonstration flight targeted for as early as 2027. Nuclear thermal propulsion is three or more times more efficient than the chemical rockets used today, which translates directly into shorter trip times. A faster journey means less radiation exposure, less bone loss, and fewer supplies needed on board.
This technology won’t be ready for the first Mars missions, but it could transform later ones. Cutting a Mars transit from roughly seven months to three or four would make the difference between a grueling endurance test and something closer to a manageable expedition.
What Space Does to the Human Body
Biology remains one of the hardest barriers to long-duration space travel. In microgravity, bones lose density at a rate of 0.5 to 1.5 percent per month. For a short trip to the ISS, that’s manageable. For a two-to-three-year Mars round trip, it’s a serious medical problem.
Current countermeasures on the ISS include daily exercise on a specialized resistance device, a treadmill, and a stationary bike. These slow bone loss but don’t eliminate it. Researchers are also testing pharmaceutical approaches: drugs that block the signals triggering bone breakdown have restored bone density to near-normal levels in animal studies conducted under simulated microgravity. Some of these treatments work well in the lab, while others, like certain hormone-based therapies, have shown no effect on bone loss at all. Translating the successful ones into reliable treatments for astronauts on multi-year missions is still an active challenge.
Radiation is the other major concern. Outside Earth’s magnetic field, astronauts face constant exposure to cosmic rays and solar particle events. Current spacecraft use shielding materials, and newer approaches include polymer-based composites with specialized fillers that improve radiation blocking. Nanotechnology is being explored for its potential to protect cells from radiation damage at the molecular level. None of these solutions are fully proven for deep-space missions yet.
The Regulatory Side
Every commercial launch carrying humans in the United States requires a license from the FAA. The safety bar is high: the expected risk to any individual member of the public must not exceed a one-in-a-million chance of injury per launch. Companies must also demonstrate financial responsibility, essentially proving they can cover liability if something goes wrong. Passengers on commercial flights must meet specific informed-consent requirements, acknowledging the risks involved.
These regulations were designed for an era of occasional launches. As flight rates increase, the regulatory framework will need to scale with them, something that historically takes longer than the technology itself.
A Realistic Timeline
For suborbital tourism, the technology works but the business model doesn’t, at least not yet. Expect sporadic flights through the late 2020s rather than the airline-style schedules companies once promised. For orbital visits to private space stations, 2027 or 2028 is a credible start date if current construction timelines hold. Humans will likely walk on the Moon again by 2028 or 2029. Mars with humans aboard is plausible by the early 2030s, though even optimistic projections carry enormous uncertainty.
The honest answer is that space travel for trained professionals is months away from its next major milestone. Space travel as something ordinary people can do remains years to decades away, depending almost entirely on whether costs can drop by orders of magnitude. The rockets are increasingly ready. The price tags are not.