What Is the Artemis Program?

More than five decades after Apollo 17's astronauts left the last human footprints on the Moon in 1972, NASA's Artemis program is humanity's boldest effort to return. Named after the twin sister of Apollo in Greek mythology, Artemis aims to land the first woman and the first person of color on the lunar surface — and to establish a sustainable human presence there for the long term.

Unlike Apollo, which was driven largely by Cold War competition, Artemis is designed with a broader scientific and strategic mission: using the Moon as a proving ground for deep space exploration, ultimately paving the way for crewed missions to Mars.

Key Components of the Artemis Architecture

The Space Launch System (SLS)

At the heart of Artemis is NASA's Space Launch System, the most powerful rocket ever built. SLS generates over 8.8 million pounds of thrust at liftoff, surpassing even the legendary Saturn V. It is designed to send the Orion spacecraft and large cargo payloads beyond low Earth orbit.

The Orion Spacecraft

Orion is the crew vehicle that will carry astronauts from Earth to lunar orbit and back. It features a Command Module for the crew and a European Service Module — contributed by the European Space Agency (ESA) — that provides propulsion, power, and life support.

The Lunar Gateway

Unlike Apollo's direct approach, Artemis plans to use a small space station called the Gateway in lunar orbit. Acting as a staging post, the Gateway will allow astronauts to transfer between Orion and lunar landers, enable longer missions, and serve as a hub for scientific research.

Human Landing Systems

NASA selected SpaceX's Starship as the initial Human Landing System (HLS) to ferry astronauts between the Gateway and the lunar surface. Additional commercial lander contracts have also been awarded to broaden future options.

Mission Milestones

  • Artemis I (2022): An uncrewed test flight that sent the Orion capsule on a 25-day journey around the Moon, validating the SLS rocket and spacecraft systems.
  • Artemis II: The first crewed Artemis flight, planned to take four astronauts on a lunar flyby — the first humans to travel to the vicinity of the Moon since 1972.
  • Artemis III: The landmark crewed lunar landing mission, targeting the Moon's south pole — a region believed to harbor water ice in permanently shadowed craters.

Why the Lunar South Pole?

The south polar region of the Moon is of enormous scientific interest. Permanently shadowed craters there may contain billions of tons of water ice, which could be extracted and converted into drinking water, oxygen for breathing, and rocket propellant — dramatically reducing the cost and complexity of future deep-space missions.

International Collaboration

Artemis is not a solo American endeavor. Through the Artemis Accords, NASA has brought together space agencies from countries including Canada, Japan, the United Kingdom, Australia, and members of the European Space Agency. This framework establishes shared principles for peaceful, transparent, and sustainable exploration of the Moon and beyond.

Looking Further: The Path to Mars

Every technology tested and every lesson learned under Artemis feeds directly into plans for eventual crewed Mars missions. Life support systems, deep-space navigation, in-situ resource utilization, and long-duration human spaceflight are all being developed and refined through lunar operations.

The Moon, in this sense, is not the destination — it is the training ground for the greatest journey in human history.