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'''''Artemis I''''' was the first mission in NASA’s Artemis program, designed to return humans to the Moon and eventually enable sustained lunar exploration. It was an uncrewed test flight that launched the Space Launch System (SLS) rocket and the Orion spacecraft on a mission beyond the Moon and back. The mission marked a significant milestone in NASA’s goal to establish a long-term human presence on the Moon and to prepare for future missions to Mars.

== Mission Overview ==

* '''Mission Name''': Artemis I
* '''Mission Type''': Uncrewed lunar orbit test flight
* '''Operator''': NASA
* '''Launch Date''': November 16, 2022
* '''Launch Site''': Kennedy Space Center, LC-39B, Florida
* '''Rocket''': Space Launch System (SLS) Block 1
* '''Spacecraft''': Orion Multi-Purpose Crew Vehicle
* '''Mission Duration''': 25 days, 10 hours, 53 minutes
* '''Landing Date''': December 11, 2022
* '''Landing Site''': Pacific Ocean, near Baja California

== Objectives ==
The primary objectives of Artemis I included:

* Testing the performance of the SLS rocket during launch and ascent.
* Validating Orion’s capabilities in deep space, including its propulsion, navigation, and communication systems.
* Evaluating Orion’s heat shield performance during reentry at lunar return velocities.
* Demonstrating safe recovery operations after splashdown.

== Mission Highlights ==

* Artemis I successfully launched on '''November 16, 2022''', after multiple delays due to technical issues and weather conditions.
* The Orion spacecraft completed a '''distant retrograde orbit''' around the Moon, traveling over '''270,000 miles (435,000 km)''' from Earth, farther than any spacecraft designed to carry humans has flown.
* Orion made two close flybys of the Moon, passing within '''80 miles (130 km)''' of the lunar surface.
* The spacecraft returned safely to Earth, reentering the atmosphere at over '''24,500 mph (39,400 km/h)''' and splashing down in the Pacific Ocean.

== Payloads and Experiments ==
Artemis I carried several secondary payloads, including '''CubeSats''' designed to conduct scientific and technological investigations. Some notable payloads included:

* '''BioSentinel''': Studied the effects of deep space radiation on yeast cells.
* '''Lunar IceCube''': Searched for water ice on the Moon using an infrared spectrometer.
* '''OMOTENASHI''': A Japanese CubeSat aiming to demonstrate a lunar surface landing (though it failed after deployment).

The mission also featured '''mannequins and sensors''' aboard Orion to measure radiation exposure and test life support systems in preparation for crewed missions.

== Significance and Legacy ==
Artemis I demonstrated the integrated performance of NASA’s new exploration systems, paving the way for '''Artemis II''', the first crewed lunar flyby, and '''Artemis III''', which aims to land astronauts on the Moon's south pole. The mission reaffirmed NASA’s capability to execute complex deep-space missions and marked the beginning of a new era in human space exploration.

== Future Missions ==

* '''Artemis II''': Scheduled for 2025, this will be the first crewed Artemis mission.
* '''Artemis III''': Expected to land the first woman and the next man on the Moon, possibly by 2026, using the Orion spacecraft and the SpaceX Starship Human Landing System.

== External Links ==

* NASA Artemis Program
* Artemis I Mission Summary (PDF)