Artemis 2: Humanity’s Return to Deep Space Begins

By Shane Mayer,

The Lawrenceville School, NJ

On April 1, 2026, NASA launched Artemis 2, a 10-day mission that traveled around the moon carrying a crew of four aboard the Orion spacecraft. The spacecraft returned Friday, April 10th, marking the first crewed mission to the Moon or beyond low Earth orbit in 50 years and reached a record-setting distance for human spaceflight (traveled 252,756 miles away from Earth). Artemis 2 served as a critical test flight, gathering information and experience in order to work towards long-term presence on the moon and set the stage for future Artemis missions. 

The crew, Reid Wiseman, Victor Glover, Christina Koch, and Jeremy Hansen, followed a non-linear trajectory, using the gravity of Earth and the Moon to naturally guide the crew home. This type of path is known as a free-return, and was used once before in NASA’s Apollo 13 mission in 1970 in order to safely get its astronauts back to Earth after a near-fatal mishap. The free-return trajectory forms a looping figure eight, harnessing a gravity-guided orbital trajectory from a larger body, in this case the Earth and Moon. 

Deep-space navigation relies heavily on orbital mechanics and Newtonian physics in order to ensure the trajectory of spacecrafts and crew safety. Newtonian Mechanics (universal gravitation and laws of motion) dictate how a spacecraft orbits celestial bodies, requiring precise modeling of the gravitational influence of multiple different bodies, including the Earth, Sun, spacecraft, moon, etc. 

Another major challenge is the high-speed reentry a spacecraft has to endure which causes extreme heat that can reach thousands of degrees. This happens because of the energetic compression of air when a spacecraft hits the atmosphere, causing gases to heat up to extreme temperatures. 

In order to combat this, Orion used a heat shield made out of a compound known as AVCOAT, which deflects as much heat away from the spacecraft as possible. This compound was also used in Apollo-era technology.

Orion actually externally closely resembles the Apollo spacecraft; however, in reality, it has significantly more advanced systems than Apollo-era technology since it was designed with AutoCAD technology, microprocessors, and an abundance of new digital software. Orion also provides a 30% larger interior volume than the Apollo Command Module. 

Overall, the mission performed as expected despite facing a few minor technical anomalies and waste management system issues. In order to fix the waste management system troubles on Orion, Astronaut Christina Koch acted as a plumber, receiving instructions from mission control. There were also several backup options available on Orion, such as collection bags. 

 “We will continue our journey even further into space before Mother Earth succeeds in pulling us back,” said astronaut Jeremy Hansen, as the Artemis 2 crew broke the distance record from Earth for space travel. “We most importantly choose this moment to challenge this generation and the next to make sure this record is not long-lived.”

In addition to its record-setting achievement, Artemis 2 paves the way for future missions and long-term lunar exploration. Orion confirmed the critical systems needed to support future lunar surface exploration by providing data on spacecraft performance, navigation, and life-support systems. These results support future missions such as Artemis 3, which aims to land the first astronauts on the lunar South Pole and establish a long-term human presence through a permanent lunar surface base. Artemis 2 also provides vital information for future crewed missions beyond the Moon, including eventual human exploration of Mars.

Works Cited

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Elkins, Kel. “Artemis II Mission Trajectory.” NASA Scientific Visualization Studio, 6 Apr. 2026, svs.gsfc.nasa.gov/5632/.

Ghosh, Pallab. What Nearly Went Wrong on Nasa’s Space Mission - and What Still Could. 2 Apr. 2026, www.bbc.com/news/articles/c36rxe9w97zo.

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Sia, Jin Sing. “Rocket Physics, the Hard Way: Re-Entry and Hypersonic Flight.” The Mars Society of Canada, 24 June 2021, www.marssociety.ca/2021/06/24/rocket-physics-the-hard-way-re-entry-and-hypersonic-flight/.

“Track NASA’s Artemis II Mission in Real Time - NASA.” NASA, 6 Mar. 2026, www.nasa.gov/missions/artemis/artemis-2/track-nasas-artemis-ii-mission-in-real-time/.

Vergano, Dan. “NASA’s Artemis II “Free Return” Trajectory Lets Gravity Do the Driving.” Scientific American, 7 Apr. 2026, www.scientificamerican.com/article/nasas-artemis-ii-free-return-trajectory-lets-gravity-do-the-driving/.

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