Artemis II: A Historic Launch

NASA’s Artemis II crew successfully launched on Wednesday, embarking on a mission to travel around the moon and safely return to Earth. The launch, atop the Space Launch System (SLS) rocket, marked the first crewed mission to the moon in over 50 years.

The Crew and the Mission

The Artemis II crew consists of NASA astronauts Reid Wiseman, Victor Glover, and Christina Koch, alongside Canadian Space Agency astronaut Jeremy Hansen. Their roughly 10-day mission will serve as a critical test flight for the Orion spacecraft, evaluating its life-support systems and maneuverability.

A Free Return Trajectory

The spacecraft is following a “free return trajectory,” utilizing Earth’s gravitational pull to loop around the moon and return to the planet. This path requires less fuel and presents a lower risk profile than entering lunar orbit. The crew will approach within approximately 5,000 miles of the lunar surface.

Testing and Science in Deep Space

Shortly after reaching high-Earth orbit, the crew conducted a proximity operations test, taking manual control of the Orion spacecraft to assess its handling. Victor Glover, Artemis II pilot, emphasized the importance of this test for future docking procedures with lunar landers.

Human Research and Lunar Observations

The astronauts are also participating in scientific experiments to study the effects of deep space travel and increased radiation exposure on the human body. Researchers are collecting physiological data and analyzing the astronauts’ cells. Furthermore, the crew will observe and photograph previously unseen areas of the far side of the moon, providing valuable geological data.

“They’ll be able to see places on the moon that, actually, no human eyes have ever seen before,” stated Artemis II mission scientist Barbara Cohen.

CubeSat Deployments

The mission is also carrying CubeSats from Germany, South Korea, Saudi Arabia, and Argentina. These small satellites will conduct research on space radiation, space weather, and the effects on space hardware.

Return to Earth and Future Plans

Upon re-entry, the Orion capsule will encounter temperatures of up to 3,000 degrees Fahrenheit. A heat shield will protect the astronauts during this intense phase. NASA has adjusted the re-entry angle to minimize exposure to extreme heat, based on findings from a 2022 uncrewed test flight.

The capsule will splash down in the Pacific Ocean off the coast of California, deploying airbags for a stable landing. A recovery crew will retrieve the astronauts, completing the mission. Christina Koch, Artemis II mission specialist, expressed hope that this mission will inspire a new era of lunar exploration, making the moon a destination for all.

The data gathered from Artemis II is crucial for planning future Artemis missions, including the establishment of a permanent base on the lunar surface.