The Pentagon has disclosed few details about the X-37B mission, which is conducted by the US Space Force under the military’s National Security Space Launch programme.
The Boeing-built vehicle, roughly the size of a small bus and resembling a miniature space shuttle, is built to deploy various payloads and conduct technology experiments on long-duration orbital flights.
North America seemingly targeted with signals by China’s space plane. But why?
North America seemingly targeted with signals by China’s space plane. But why?
At the end of its mission, the craft descends back through the atmosphere to land on a runway much like an airplane.
It has flown six previous missions since 2010, the first five of them carried to orbit by Atlas V rockets from United Launch Alliance, a joint venture of Boeing and Lockheed Martin, and most recently, in May 2020, atop a Falcon 9 booster furnished by Elon Musk’s SpaceX.
Thursday’s mission marked the first launched aboard SpaceX’s more powerful Falcon Heavy rocket, capable of carrying payloads even heavier than the X-37B farther into space, possibly into geosynchronous orbit, more than 35,000km (22,000 miles) above the Earth.
The X-37B, also called the Orbital Test Vehicle, has previously been confined to flights in low-Earth orbit, at altitudes below 1,200km (1,200 miles).
The Pentagon has not said how high the spaceplane will fly this time out. But in a statement last month, the Air Force Rapid Capabilities Office said the mission, designated by the Space Force as USSF-52, would involve tests of “new orbital regimes, experimenting with future space domain awareness technologies”.
Such comments have led industry analysts and amateur space trackers to speculate that the X-37B may be bound for a highly elliptical orbit around Earth or even a path that could swing it out to the vicinity of the moon, a region of space in which the Pentagon has taken an increasing interest.
“Maybe this thing’s going go out toward the moon and drop off a payload,” said Bob Hall, director of space traffic monitoring firm COMSPOC, who analyses the trajectories of orbital objects. The closer the spacecraft flies to the moon, the more difficult it could be to safely return to Earth.
Left unclear from Thursday’s webcast, which SpaceX said it curtailed at the military’s request, was whether the X-37B reached its intended destination in space. But the company later posted photos of the liftoff on social media platform X with the headline: “Falcon Heavy Launches USSF-52 to orbit”.
The X-37B also is carrying a Nasa experiment to study how plant seeds are affected by prolonged exposure to the harsh environment of radiation in space. The ability to cultivate crops in space has major implications for keeping astronauts nourished during future long-term missions to the moon and Mars.
China’s equally secretive Shenlong was carried to space on December 14 by a Long March 2F rocket, a launch system less powerful than SpaceX’s Falcon Heavy and believed to be limited to delivering payloads to low-Earth orbit.
Still, Space Force General B. Chance Saltzman told reporters at an industry conference earlier this month he expected China to launch Shenlong around the same time as the X-37B flight in what he suggested was a competitive move.
“These are two of the most watched objects on orbit while they’re on orbit. It’s probably no coincidence that they’re trying to match us in timing and sequence of this,” Saltzman said, according to remarks published in the journal Air & Space Forces Magazine.
The planned duration of the latest X-37B mission has not been made public, but it will presumably run until June 2026 or later, given the prevailing pattern of successively longer flights.
Its last mission remained in orbit for well over two years before a return landing in November 2022.
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