Space suddenly seems a little more reachable - at least, for those who have cash to burn.

Virgin Galactic's announcement Tuesday that it is going public through a merger with an investment firm came with an update that the company is preparing to send its first customers into space within a year, CNBC reported. More than 600 people have placed deposits topping $80 (NZ$120) million in total, chairman Chamath Palihapitiya told the network, and another 2,500 want to get in line.

Blue Horizon: Washington Post owner, Jeff Bezos's pet project is getting punters into space. Photo / Getty Images
Blue Horizon: Washington Post owner, Jeff Bezos's pet project is getting punters into space. Photo / Getty Images

Virgin isn't alone in the space race: Blue Origin, Jeff Bezos' space exploration company, is promoting "the largest windows in space" on its New Shepard capsule, although test flights with humans onboard have not yet taken place. (Bezos owns The Washington Post.) Elon Musk announced last year that his company, SpaceX, has a customer lined up who will pay to fly around the moon. Last month, NASA made a change in policy and said it would allow space tourists to visit the International Space Station as soon as next year. The agency said logistics would have to be arranged by SpaceX and Boeing, which NASA has tapped to get crews to the space station.

So will we all be jetting around space with our cameras, orbital passports and zero-gravity fanny packs in a decade? Not so fast. Here's what potential space explorers need to know.

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What does space tourism involve?

The most widely touted versions involve rocketing passengers more than 50 miles into the atmosphere and achieving minutes of weightlessness and witnessing Earth views before returning to land. Virgin Galactic and Blue Origin differ in the details of how they will get to space and the altitude they'll reach, but they are promoting relatively similar experiences and plan to carry six passengers at once.

To infinity . . . An Astrium Space Jet mock up at the Paris Airshow. Photo / Getty Images
To infinity . . . An Astrium Space Jet mock up at the Paris Airshow. Photo / Getty Images

There are even more ambitious offerings: Space Adventures, which has sent seven people to space as tourists, offers multiday experiences including a "circumlunar" mission, a trip to the International Space Station and a spacewalk add-on; the company has contracted with Boeing to help sell seats aboard its spacecraft. Bigelow Space Operations, a branch of space-technology company Bigelow Aerospace, said last month it had "paid substantial sums as deposits and reservation fees to secure up to four SpaceX launches to the International Space Station."

For those craving weightlessness without the actual space travel, Zero Gravity Corporation gets you there 15 times, for 20 to 30 seconds each, in a trip, through aerobatic manoeuvres.

How much does it cost?

Virgin Galactic is reportedly charging up to $250,000 (NZ$375,000) for its trips. Reuters reported that Blue Origin will charge between $200,000 (NZ$299,000) and $300,000 (NZ$349,000).

For the biggest spenders, Bigelow Space Operations has set the price of a space station trip at $52 (NZ$78) million; most of that cost is to get there. NASA estimated that staying at the station would set travelers back about $35,000 (NZ$52,000) a night.

Space Adventures does not list prices on its website. (If you have to ask, you probably can't afford it.) The last tourist in space, Cirque du Soleil founder Guy Laliberté, reportedly paid $35 (NZ$52) million for his 2009 trip to the space station arranged by the company in partnership with Russia's space agency.

Comedown: Cirque du Soleil founder Guy Laliberté, reportedly paid $35 million to get to space. Photo / Getty Images
Comedown: Cirque du Soleil founder Guy Laliberté, reportedly paid $35 million to get to space. Photo / Getty Images

The option of least resistance is Zero Gravity Corporation, which sells a single seat on its flights (which, again, don't actually go to space) for $5,400 (NZ$8,000) plus tax.

Who can go?

Other than prohibitions associated with cost, no companies have announced any limitations on who can travel. On its website, Virgin Galactic says its plan is to "open space to everybody," from ages "spanning the teens to the 90s."

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How soon can people go?

This has been a moving target for more than a decade, and initial dates are still not firm. Virgin Galactic's chairman said Tuesday that it expected to fly its first customers within a year, but with a backlog of hundreds, the wait would still be extensive. Blue Origin has not yet opened reservations or even flown a test flight with humans. And SpaceX has said its trip around the moon could not happen before 2023.

What kind of training is necessary?

Astronauts who fly with space programs are subject to high fitness standards and rigorous training. Space tourists, not so much.

Blue Origin says passengers will learn everything they need to know the day before launch, including "mission and vehicle overviews, in-depth safety briefings, mission simulation and instruction on your in-flight activities such as operational procedures, communications and maneuvering in a weightless environment."

Space Odyssey: We think we know what space tourism might look like, but how much will it cost? Photo / George Rinhart, Getty Images
Space Odyssey: We think we know what space tourism might look like, but how much will it cost? Photo / George Rinhart, Getty Images

Virgin Galactic says training and preparation would take three days: "Pre-flight training will ensure that each astronaut is mentally and physically prepared to savour every second of the spaceflight and fully equipped to fulfill any personal objectives. Our aerospace medical experts will be constantly on hand to offer advice and help, and to check pre-flight fitness," the company says.

Where do I sign up?

For the most part, companies that are moving closer to spaceflight are taking names on their websites. There are also a handful of travel agents accredited for space trips with Virgin Galactic. Bigelow Space Operations essentially tells people to stay tuned: "As you might imagine, as they say 'the devil is in the details,' and there are many."