Four astronauts aboard Orion 'Integrity' face a go/no-go decision tonight for the translunar injection burn that will send humans beyond low Earth orbit for the first time in 54 years. The mission launches under active space weather, with an unpublished heat shield safety review, and into a programme whose architecture was restructured around the crew mid-flight.
Artemis II is historic, but reentry on 10 April is the only test that matters.
Artemis II launched from Kennedy Space Center on 1 April, sending the first humans beyond low Earth orbit since 1972.
Artemis II launched at 6:35 PM EDT on 1 April 2026 from Kennedy Space Center, carrying Reid Wiseman, Victor Glover, Christina Koch, and Jeremy Hansen toward the Moon.
No humans had left low Earth orbit since December 1972. Koch is the first woman to reach the lunar environment; Glover the first Black astronaut; Hansen the first non-American. The crew will fly a free-return arc before splashdown near San Diego around 10 April.
Flight controllers will make a go/no-go call at approximately 8 PM ET on the six-minute burn that sends the crew irreversibly toward the Moon.
United StatesNASA flight controllers scheduled a go/no-go at approximately 8 PM ET on 2 April for Orion's translunar injection burn: a 6-minute irreversible firing committing the crew to a lunar free-return trajectory.
Controllers faced 2 active risks: a G2 Space weather watch from an X-class solar flare on 31 March, and a heat shield modification unproven with a crew. The free-return arc uses lunar gravity to bring the crew home passively, the same principle that saved Apollo 13 in 1970.
NASA never published its Independent Review Board findings on Artemis I heat shield damage. The fix is a changed flight path, not a repaired shield.
AustraliaOrion's heat shield shed ablative material at more than 100 locations during the uncrewed Artemis I test in November 2022. NASA's Independent Review Board, led by former shuttle flight director Paul Hill, has never published its findings. The Artemis II shield went unrepaired.
The mitigation is a trajectory change to a steeper direct-descent reentry, eliminating the skip manoeuvre that caused the damage. Reentry on approximately 10 April will be the first test of that profile with a crew aboard.
A May 2024 report laid out spalling, bolt erosion, and parachute compartment risk, including one scenario leading to crew loss.
NASA's Office of Inspector General identified 3 Orion heat shield failure modes in a May 2024 report: material spalling, bolt erosion beyond thermal barriers, and fragment impact risk to the parachute compartment. One finding warns that bolt melt could allow hot gas ingestion "exceeding structural limits and resulting in crew loss."
NASA's safety case rests on updated models. Those same models failed to predict the original spalling on the uncrewed Artemis I flight in 2022.
RAND assessed China's 2030 crewed lunar landing target as credible, while Artemis has pushed its first potential landing to 2028.
United StatesRAND Corporation assessed in November 2025 that China's crewed lunar landing target of 2030 is credible. The Mengzhou capsule has a robotic test in 2026, Lanyue lander in 2027, and a joint crewed test planned for 2028 or 2029.
Artemis IV, now the first potential crewed landing, targets 2028. Artemis has slipped 5 to 7 years from original projections. A single further delay could hand China the first crewed lunar landing since 1972.
Jeremy Hansen's crew seat was purchased with a $1 billion Canadarm3 contract for a space station that no longer exists.
NASA cancelled the Lunar Gateway programme in March 2026, stranding Canada's $1 billion CAD Canadarm3 contract with MDA Space and leaving Jeremy Hansen's crew seat without the programmatic infrastructure that justified it.
The Lunar Gateway cancellation has severed the return on Canada's largest space investment in decades, leaving MDA Space with a robot arm and no confirmed destination.
The European Service Module is operating without anomalies, its main engine a relic of 1990s shuttle missions about to fire for the Moon.
ESA confirmed on 2 April that the European Service Module (ESM-2), built by Airbus in Bremen with parts from 13 countries, is powering Orion without anomalies. Its main engine is a Space Shuttle Orbital Manoeuvring System engine that flew 6 shuttle missions in the 1990s and 2000s.
That engine will fire tonight's translunar injection burn. The Shuttle programme ended in 2011; the engine outlived it by 15 years. ESM contracts have generated roughly €2 billion across European aerospace.
Administrator Isaacman cut the Block 1B and Block 2 variants in February, pushing the first crewed lunar landing to Artemis IV in 2028.
On 26 February 2026, NASA Administrator Jared Isaacman cancelled the Block 1B and Block 2 Space Launch System upgrades. Artemis III was redesignated from the first crewed lunar landing to a low Earth orbit lander test. The first potential crewed landing shifts to Artemis IV, targeting 2028.
SLS is now a 5-mission bridge rocket. The programme has slipped 5 to 7 years from original projections, and the commercial vehicles intended to replace it have not been crewed-mission-qualified.
The programme has spent $93 billion through 2025 without landing anyone on the Moon, with Orion alone exceeding its cost baseline by $3.2 billion.
Each Space Launch System flight costs approximately $4 billion, confirmed by acting NASA administrator Sean Duffy. Total Artemis spending through 2025 stands at roughly $93 billion, per the NASA Office of Inspector General. Orion alone exceeded its cost baseline by $3.2 billion.
The entire Apollo programme cost around $280 billion in today's money. Artemis has spent a third of that total without landing anyone on the Moon. The OIG described NASA's cost savings goals as "highly unrealistic."
The One Big Beautiful Bill Act mandates $1.025 billion per year for SLS regardless of NASA's programme restructuring.
United StatesCongress passed the One Big Beautiful Bill Act, mandating Space Launch System funding of $1.025 billion per year from FY2026 through FY2029 for Artemis IV and V.
NASA has cancelled the Block 1B and Block 2 SLS upgrades and plans to retire the rocket after 5 flights. Congress is mandating $4.1 billion in future spending on a rocket NASA is already phasing out. SLS factories span more than 40 states, and constituency politics are driving the mandate.
An X-class flare on 31 March and a G1 geomagnetic watch through today coincide with the TLI decision window.
An X-class solar flare on 31 March triggered a G2 geomagnetic storm watch, and NOAA's Space Weather Prediction Center extended a G1 watch through 2 April, covering the translunar injection burn window. The ten-day mission is estimated to consume roughly 5% of an astronaut's career radiation limit under normal conditions.
This flight coincides with solar maximum, the peak of the Sun's 11-year activity cycle. No crewed vehicle has tested radiation exposure under these conditions since Apollo 17 in 1972.
A 70-minute manual approach-and-retreat demonstration validated the docking skills needed for future deep-space rendezvous.
On 1 April, Reid Wiseman and Victor Glover guided Orion to within approximately 10 metres of the detached Interim Cryogenic Propulsion Stage upper stage during a 70-minute manual approach-and-retreat exercise. The crew flew direct thruster commands throughout, with no automated docking system.
Future Artemis landing missions require a manual deep-space rendezvous with a lunar lander, where communication delays make full ground control impractical. The demonstration confirms the crew holds that capability.
Organ-on-chip devices grown from each astronaut's bone marrow will produce the first personalised deep-space radiation data.
Orion carries 4 organ-on-chip devices containing cells grown from each crew member's own bone marrow, part of the AVATAR Experiment run with BARDA, the NIH, and Harvard's Wyss Institute. Exposing personalised tissue to deep-space radiation alongside the donors produces the first individualised dataset of its kind.
Previous space radiation studies used generic tissue or animal models. The data will set dosage limits and shielding requirements for Mars missions, where crews face far greater exposure than any prior flight.
Several Artemis Accords nations have also signed China and Russia's rival framework, revealing a multipolar space governance reality.
AustraliaAs of January 2026, 61 nations had signed the Artemis Accords, with Oman the most recent. But several signatories, including Thailand and Senegal, have also signed China and Russia's rival International Lunar Research Station framework.
Smaller spacefaring nations gain access to whichever programme succeeds by signing both. The US Coalition is less exclusive than 61 signatories suggests: lunar governance is shaping up as multipolar, not bipolar.
A minor systems fault on 1 April was diagnosed and cleared within hours, marking the first in-flight anomaly on a crewed deep-space vehicle.
A fault light on Orion's toilet fan appeared before the apogee raise burn on 1 April. Ground teams at Johnson Space Center diagnosed a jammed fan and restored normal operations by 2 April.
Ground teams cleared the fault in a few hours. The record stands: this is the first in-flight anomaly on a crewed spacecraft beyond low Earth orbit since Apollo. The crew-ground diagnostic loop it tested will matter more as communication delays extend on longer missions.
The heat shield reentry is binary: success validates NASA's mitigation; failure is catastrophic and would collapse Artemis III and IV timelines. The space race dimension means further delays carry geopolitical as well as programmatic consequences.
