Since the Apollo 17 crew returned from the Moon in 1972, human spaceflight has been limited to low Earth orbit (LEO). Whether they were aboard Skylab, Mir, the Space Shuttle, a Soyuz capsule, or the International Space Station, no crew has traveled more than 600 kilometers (372 miles) or so from the Earth’s surface in nearly 50 years. Representatives of the world’s space organizations would say they have been using Earth orbit as a testing ground for the technology that will be needed for more distant missions, but those critical of our seemingly stagnated progress into the solar system would say we’ve simply been stuck.

Many have argued that the International Space Station has consumed an inordinate amount of NASA’s time and budget, making it all but impossible for the agency to formulate concrete plans for crewed missions beyond Earth orbit. The Orion and SLS programs are years behind schedule, and the flagship deep space excursions that would have utilized them, such as the much-touted Asteroid Redirect Mission, never materialized. The cracks are even starting to form in the Artemis program, which appears increasingly unlikely to meet its original goal of returning astronauts to the Moon’s surface by 2024.

But with the recent announcement that NASA will be splitting the current Human Exploration and Operations Mission Directorate into two distinct groups, the agency may finally have the administrative capacity it needs to juggle their existing LEO interests and deep space aspirations. With construction of the ISS essentially complete, and the commercial spaceflight market finally coming together, the reorganization will allow NASA to start shifting the focus of their efforts to more distant frontiers such as the Moon and Mars.

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