The space company named Blue Origin is having a big year. New chief executive Dave Limp, who arrived in December, is working to instill a more productive culture at the firm owned by Jeff Bezos. In January, the company's powerful BE-4 rocket engine performed very well on the debut launch of the Vulcan booster. And later this year, possibly as soon as August, Blue Origin's own heavy-lift rocket, New Glenn, will take flight.

But wait, there's more. The company has also been hard at work developing hardware that will fly on New Glenn, such as the Blue Ring transfer vehicle that will be used to ferry satellites into precise orbits. In addition, work continues on a private space station called Orbital Reef.

One of the key questions about that space station is how astronauts will get there. The only current means of US crew transportation to low-Earth orbit is via Blue Origin's direct competitor, SpaceX, with its Dragon vehicle. This is likely unpalatable for Bezos.

Boeing is an official partner on Orbital Reef. It has a crewed spacecraft, Starliner, set to make its debut flight in April. But there are serious questions about Boeing's long-term commitment to Starliner beyond its seven contracted missions with NASA, in addition to concerns that its price will be about 50 percent higher than Dragon if it ever flies private astronauts. Blue Origin has also had some discussions with India about using its new crew capsule.

All of these options have downsides, especially for a company that has a vision of "millions of people living and working in space." It has long been understood that Blue Origin will eventually develop a crewed spacecraft vehicle. But when?

Now, apparently.

A bit of history

A dozen years ago, the company was performing preliminary studies of a "next-generation" spacecraft that would provide transportation to low-Earth orbit for up to seven astronauts. Blue Origin ultimately received about $25 million from NASA's commercial crew program before dropping out—SpaceX and Boeing were the ultimate victors.

For a time, the crew project was on the back burner, but it has now become a major initiative within Blue Origin, with the company hiring staff to develop the vehicle.

The first public hint of this renewed interest came last June, when NASA announced that Blue Origin was one of seven companies to sign an unfunded Space Act Agreement to design advanced commercial space projects. Later, in a document explaining this selection process, NASA revealed that Blue Origin was working on a "commercial space transportation system." This included a reusable spacecraft that would launch on the New Glenn rocket.

"The development plan for the reusable CTS (commercial space transportation system) has significant strengths for its low external dependence, approach to mature its technologies, and demonstrated technical competency," NASA stated in its source selection document, signed by Phil McAlister, director of the agency's commercial space division.

Staffing up for a crew vehicle

The best evidence that Blue Origin is serious about developing an orbital human spacecraft has come in recent job postings. For example, the company is seeking a leader for its "Space Vehicle Abort Thrusters Integrated Product Team" on LinkedIn. Among the preferred qualifications is "experience with human spaceflight or high-performance aircraft systems."

Most human spacecraft have "abort thrusters" as part of their design. Built into the crew vehicle, they are designed to automatically fire when there is a problem with the rocket. These powerful thrusters pull the crew vehicle away from the rocket—which is often in the process of exploding—so that the astronauts can parachute safely back to Earth. All of the crewed vehicles currently in operation, SpaceX's Dragon, Russia's Soyuz, and China's Shenzhou, have such escape systems. There is no practical reason for abort thrusters on a non-human spacecraft.

After years of secrecy, Blue Origin is revealing more about its intentions of late. This is likely due to the long-awaited debut of the New Glenn rocket, which will announce Blue Origin's presence as a bona fide launch company and significant competitor to SpaceX. It's therefore probable that the company will talk more about its crewed spaceflight ambitions later this year.