More than half a century has passed since an American astronaut last set foot on the Moon. Apollo 17 returned to Earth in December 1972, and for decades afterward, human spaceflight stayed close to home, circling the planet aboard space stations and shuttles. Now, that long pause is ending. NASA’s Artemis program is America’s plan to send astronauts back around the Moon and, ultimately, back to its surface — not for a brief visit this time, but to stay. Named for Artemis, the twin sister of Apollo in Greek mythology, the program is the most ambitious human spaceflight effort since the Apollo era, and it carries a promise that reaches far beyond a single landing: a lasting American presence on the Moon, and a stepping stone to Mars.
Artemis is not a single mission. It is a campaign of increasingly complex flights, each one building on the last, carried out by NASA together with international partners and American commercial companies. The first flight proved the hardware without a crew aboard. The second carries astronauts around the Moon. Later flights aim to land crews on the lunar surface, build a small station in orbit around the Moon, and settle into a rhythm of roughly one mission a year. If it succeeds, Artemis will reshape what Americans think of as possible — and reassert American leadership in the final frontier at a moment when other nations are racing to the Moon too.
What Is the Artemis Program?
At its heart, Artemis is NASA’s program for sustainable crewed exploration of the Moon. Its stated goals are straightforward: return astronauts to the lunar surface, advance scientific discovery, create economic opportunities, and inspire a new generation of explorers — all while maintaining American leadership in space and strengthening a global coalition of partners. The program was formally established in 2017, when Space Policy Directive 1 directed NASA to lead a U.S. return to the Moon, followed by missions to Mars and beyond. Congress had already set the stage years earlier, with the NASA Authorization Act of 2010 calling for an expanded permanent human presence beyond low Earth orbit and mandating the development of a crew capsule and a heavy-lift rocket. Those two vehicles — the Orion spacecraft and the Space Launch System, or SLS, rocket — are the backbone of Artemis today.
Unlike Apollo, which was almost entirely an American government effort, Artemis is a partnership. The European Space Agency provides Orion’s service module, the part of the spacecraft that supplies power, propulsion, and life support. Canada is contributing Canadarm3, a next-generation robotic system for the planned lunar Gateway station, and in return receives astronaut flights to the Moon. Japan’s space agency and the Mohammed bin Rashid Space Centre of the United Arab Emirates are also involved, along with commercial companies such as SpaceX and Blue Origin, which are building the lunar landers that will carry astronauts from lunar orbit down to the surface. You can read NASA’s own overview of the campaign on its Artemis program page.
Artemis I: The Uncrewed Test Flight That Proved Orion
Every great journey starts with a test, and Artemis I was that test. Launched on November 16, 2022, from Kennedy Space Center in Florida, Artemis I was the first integrated flight of the SLS rocket and the Orion spacecraft, flown without astronauts aboard. Instead of a crew, Orion carried a simulated crew of three mannequins wired with sensors, along with a host of experiments, so engineers could measure exactly what future astronauts would experience. Over a 25.5-day journey, Orion flew to the Moon, looped around it in a distant orbit, and came home again, traveling some 1.4 million miles in total.
The mission was a genuine trial by fire. Orion flew by the Moon twice, coming within about 80 miles of the lunar surface, and at its farthest point traveled roughly 270,000 miles from Earth — farther than any spacecraft built to carry humans had ever gone, breaking a record set by Apollo 13. Then came the hardest part: reentry. Orion slammed into Earth’s atmosphere at roughly 25,000 miles per hour, its heat shield enduring temperatures around 5,000 degrees Fahrenheit. Engineers used a daring “skip entry” technique, bouncing the capsule off the upper atmosphere like a stone skipped across a pond, to slow it more gently and land it precisely. On December 11, 2022 — exactly 50 years to the day after Apollo 17 touched down on the Moon — Orion splashed down in the Pacific Ocean off Mexico’s Baja California peninsula, right on target. The flight proved the spacecraft could carry humans to the Moon and bring them home safely. SpaceNews covered the splashdown and the mission’s key test objectives in its report on the Artemis I finale.
Artemis II: Astronauts Around the Moon
Artemis II is the mission that puts people back in the picture. Launched in April 2026, it was the first crewed flight of Orion aboard the SLS rocket, sending four astronauts on a nearly 10-day voyage around the Moon and back. The crew flew a free-return trajectory — a looping path that swings around the far side of the Moon and uses lunar gravity to send the spacecraft home — passing roughly 4,000 miles above the lunar surface at its closest approach. No one had traveled that far from Earth since Apollo, and the flight tested Orion’s life-support systems, navigation, and communications with a real crew aboard for the first time.
That distinction matters. Artemis II became the only crewed flight beyond low Earth orbit outside the Apollo program, a milestone more than fifty years in the making. For the public, it was something else — the moment the return to the Moon stopped being a plan on paper and became a journey with people on board. NASA describes the mission as the first crewed flight of its Orion spacecraft aboard the SLS rocket, and its Artemis overview tracks the campaign’s progress from this flight onward.
Artemis III and IV: The Road Back to the Surface
With the crew test flight complete, the campaign turns toward its most demanding work. Artemis III, launching in 2027, will send NASA astronauts on a demonstration mission in low Earth orbit to test critical rendezvous and docking operations between Orion and test versions of the commercial human landing systems built by Blue Origin and SpaceX.
Then comes the moment the whole program has been building toward. Artemis IV, targeted for 2028, will be NASA’s first crewed Moon landing under the Artemis program — the first time humans set foot on the lunar surface since Apollo 17 in December 1972. After launching aboard the SLS rocket, the crew will transfer from Orion to a commercial human landing system, which will carry them down to the surface. NASA anticipates sustaining a cadence of about one mission per year after that, with Artemis V also planned for 2028, steadily building toward a permanent lunar base near the Moon’s south pole. The Canadian Space Agency’s summary of the campaign lays out this mission sequence and the international roles within it on its Artemis campaign page.
The Machines: SLS, Orion, Gateway, and the Lunar Landers
Artemis runs on a small fleet of remarkable machines, each with a distinct job. The Space Launch System is NASA’s heavy-lift rocket, the most powerful rocket the agency has ever built, designed to throw Orion and its crew beyond Earth orbit in a single launch. Orion itself is the crew capsule — a gumdrop-shaped spacecraft that carries four astronauts, with a European-built service module providing propulsion, power, and air and water. Together, they are the transportation system that gets people to the Moon and home again.
Because Orion is not designed to land on the Moon, the campaign needs a separate vehicle for the final leg: the Human Landing System. Commercial landers from SpaceX and Blue Origin will ferry astronauts from lunar orbit to the surface and back. And tying it all together is Gateway, a modular outpost planned for orbit around the Moon. Its first two modules — the Power and Propulsion Element and the Habitation and Logistics Outpost, a pressurized habitat for astronauts — will serve as a depot for supplies, a platform for science experiments, and a rendezvous point where crews transfer between Orion and the lander. A detailed Congressional Research Service report explains how these pieces fit together in its overview of the Artemis program.
Why the Moon, and Why Now?
It is fair to ask why America is going back to a place it already visited six times. The answer is that Artemis is not a repeat of Apollo — it is a different kind of mission with different goals. Apollo was a race, won with flags and footprints. Artemis is about staying. Scientists want to study the Moon’s south pole, where water ice hides in permanently shadowed craters; that ice could one day be turned into drinking water, breathable oxygen, and even rocket fuel, making the Moon a refueling stop for deeper space. Engineers want to test the technologies — habitats, power systems, rovers, and spacesuits — that a Mars mission will require, in a place only three days from home rather than months away. And economists see a new lunar economy taking shape, with American companies building landers, rovers, and infrastructure.
There is also a strategic reason, and NASA does not hide it. The Moon is becoming contested ground. Other nations have their own lunar ambitions, and the country that builds the infrastructure, sets the standards, and writes the rules of lunar exploration will shape the space age for decades. Artemis, with its coalition of partners, is America’s answer: a program that keeps the United States at the center of deep-space exploration while sharing the journey with allies. For a nation that watched Apollo unite the world in awe, that leadership is a matter of pride as well as policy.
What Artemis Means for America
For ordinary Americans, Artemis is easy to admire from a distance — and easy to underestimate. But its effects are already here. The program supports tens of thousands of jobs across the country, from rocket factories in the South to software labs on the West Coast. It drives advances in materials, computing, and medicine that spill over into everyday life, just as Apollo gave us everything from better insulation to modern computing. And it gives a new generation of children a reason to look up. When Artemis II’s crew looped around the Moon, classrooms across America followed along, the same way their grandparents watched Apollo.
The program’s name honors a goddess of the Moon, and its crews are meant to include the first woman to walk on the lunar surface — a deliberate contrast with Apollo, whose twelve moonwalkers were all men. The message is that this return belongs to all of America, not just to the America of 1969. The road back to the Moon is long, and it will not be easy. But for the first time in more than fifty years, America is actually on it.
Frequently Asked Questions
What is NASA’s Artemis program?
Artemis is NASA’s campaign to return astronauts to the Moon and establish a sustainable human presence there, as a stepping stone to Mars. It is led by NASA with international partners and commercial companies, using the SLS rocket, the Orion spacecraft, commercial lunar landers, and the planned Gateway station in lunar orbit.
When did Artemis I launch, and what did it prove?
Artemis I launched on November 16, 2022, and splashed down on December 11, 2022, after a 25.5-day uncrewed flight around the Moon. It proved that the SLS rocket and Orion spacecraft could carry a crew safely to lunar orbit and back, including a high-speed “skip entry” reentry that tested the heat shield at lunar return velocities.
What is Artemis II?
Artemis II, launched in April 2026, was the first crewed flight of Orion aboard the SLS rocket. Four astronauts flew a nearly 10-day voyage around the Moon and back, testing the spacecraft’s life-support, navigation, and communications systems with a crew aboard for the first time.
When will astronauts land on the Moon again?
NASA targets Artemis IV in 2028 for its first crewed Moon landing under the Artemis program, the first since Apollo 17 in 1972. Artemis III, launching in 2027, will first test rendezvous and docking with commercial landing systems in Earth orbit.
Why is NASA building the Gateway station?
Gateway is a small station planned for orbit around the Moon that will serve as a staging point for landings, a depot for supplies, a platform for science, and a transfer point between Orion and lunar landers. It is also meant to serve as a model for the kinds of outposts future Mars missions will need.