What Happened
- NASA's Artemis II mission launched on April 1, 2026 at 6:35 p.m. EDT from Launch Complex 39B at Kennedy Space Center, Florida, aboard the Space Launch System (SLS) rocket, beginning humanity's first crewed journey to the vicinity of the Moon in over 50 years.
- Over 10 mission days, the crew of four followed a free-return circumlunar trajectory, conducting systems checks, photographing the Moon (including the far side never directly seen by humans), experiencing communication blackout during the lunar far-side pass, and performing critical propulsion burns before returning to Earth.
- On Flight Day 6, the crew passed through the Moon's gravitational sphere of influence and reached closest approach — within 4,070 miles of the lunar surface — before the Orion spacecraft slingshot back toward Earth.
- The mission concluded on April 10, 2026, with splashdown in the Pacific Ocean near San Diego; the crew was recovered by U.S. Navy helicopters and transported to the USS John P. Murtha for post-mission medical evaluations.
Static Topic Bridges
Space Launch System (SLS): NASA's Super Heavy-Lift Rocket
The Space Launch System is a US government-owned, expendable super heavy-lift launch vehicle developed by NASA, with Boeing as the primary contractor for the core stage. It is the most powerful rocket NASA has ever built and the most powerful rocket to have carried human crew. The SLS is specifically designed to send the Orion capsule beyond low Earth orbit to the Moon and eventually to Mars, providing capabilities that commercial rockets currently cannot — particularly in terms of the energy required for translunar injection.
- Height: 322 feet (98 m) — taller than the Statue of Liberty.
- Thrust at liftoff: 8.8 million pounds (39.1 meganewtons) — 15% greater than the Saturn V (7.6 million pounds).
- Core stage: Powered by four RS-25 engines (heritage Space Shuttle Main Engines).
- Solid Rocket Boosters: Two boosters, each 177 feet tall, generating more than 3.6 million pounds of thrust each.
- Upper stage for Block 1: Interim Cryogenic Propulsion Stage (ICPS), built by United Launch Alliance.
- Launches from Launch Complex 39B, Kennedy Space Center — the same complex used for Saturn V missions.
Connection to this news: SLS carried Artemis II's crew on the first phase of the mission, propelling the Orion capsule out of Earth orbit toward the Moon in a manoeuvre called Trans-Lunar Injection (TLI), the same critical burn used during Apollo missions.
Launch Complex 39B and Kennedy Space Center Heritage
Launch Complex 39 (LC-39) at Kennedy Space Center was originally built for the Saturn V Apollo programme in the 1960s. Pad 39B has a long history: it was used for several Apollo missions, later modified for Space Shuttle launches, and has since been rebuilt as the primary launch facility for the SLS. This continuity of infrastructure connects the Apollo era directly to the Artemis programme.
- LC-39B is one of two pads at Complex 39; LC-39A is now leased to SpaceX for Falcon 9 and Starship launches.
- The Vehicle Assembly Building (VAB) at Kennedy Space Center, one of the largest buildings in the world by volume, was used to stack the SLS as it was used for Saturn V in the 1960s.
- Kennedy Space Center in Florida is used for launches due to its proximity to the equator, which provides an eastward rotational boost from the Earth's spin, reducing the energy needed to achieve orbit.
- The 39B pad underwent $450 million in upgrades to support SLS launches.
Connection to this news: Artemis II's launch from the same pad complex as the historic Apollo missions symbolises the programme's lineage from and evolution beyond the Apollo era.
The Lunar Far Side: Scientific and Historical Significance
The far side of the Moon permanently faces away from Earth due to tidal locking — a phenomenon where the Moon's rotational period equals its orbital period. No human had directly observed the far side from space until the Soviet Luna 3 spacecraft photographed it in 1959. The Artemis II crew briefly lost radio contact with Earth during the far-side pass, replicating the communication blackout experienced by Apollo crews.
- Tidal locking occurs because Earth's gravitational pull slowed the Moon's rotation over billions of years until synchronisation.
- The far side has a thicker, more heavily cratered crust and fewer lunar maria (volcanic plains) than the near side — geologically distinct from what we see from Earth.
- China's Chang'e 4 mission (January 2019) became the first spacecraft to land on the lunar far side; Chang'e 6 (2024) returned the first-ever samples from the far side.
- The South Pole–Aitken Basin on the far side is one of the largest and oldest impact craters in the solar system, of high scientific interest.
Connection to this news: The Artemis II crew photographed the far side during their circumlunar passage, providing unprecedented high-resolution human-observed imagery and validating communication protocols for future missions that may operate near the lunar far side.
Key Facts & Data
- Launch date and time: April 1, 2026, 6:35 p.m. EDT from LC-39B, Kennedy Space Center.
- Mission duration: 10 days.
- Total distance traveled: approximately 695,081 miles from launch to splashdown.
- Closest lunar approach: 4,070 miles from the lunar surface on Day 6.
- Maximum distance from Earth: 252,760 miles — farthest humans had traveled in history.
- Crew: Commander Reid Wiseman, Pilot Victor Glover, Mission Specialists Christina Koch and Jeremy Hansen.
- Communication blackout: Occurred during the far-side pass when Orion passed behind the Moon.
- Splashdown: April 10, 2026, Pacific Ocean near San Diego; recovered by USS John P. Murtha.