6APR

Earth Vanishes From Sky for 40 Minutes

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14:21UTC

Between Earthset at 6:45 PM and Earthrise at 7:25 PM, four astronauts see something no living person has witnessed: Earth gone entirely.

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Key takeaway

For 40 minutes, four people had neither ground contact nor Earth in view.

Orion's crew observes Earthset at 6:45 PM EDT and Earthrise at 7:25 PM EDT on 6 April.¹ Between those two moments, four crew members experience something no living person has witnessed: Earth gone from the sky entirely. The 40-minute window coincided with the communications blackout , meaning the crew had neither ground contact nor a view of home simultaneously.

Apollo 8 astronauts famously photographed Earthrise from lunar orbit in December 1968, producing one of the most reproduced images in history. But Apollo crews always had Earth in view from at least one window during their far-side passes; the geometry of Artemis II's flyby trajectory, at 4,070 miles altitude rather than Apollo's 70-mile orbit, places the spacecraft at an angle where the lunar disk fully occults the home planet.

Deep Analysis

In plain English

As Orion swung behind the Moon, Earth gradually descended below the lunar horizon from the crew's perspective. This is called Earthset, the equivalent of sunset but for your home planet. Between 6:45 PM and 7:25 PM EDT, Earth was completely hidden behind the Moon's bulk. The crew could look out any window and see only the Moon, deep space, and stars. No communications. No view of home. This was not a sensor reading or a calculation: they physically could not see Earth. At 7:25 PM, Earthrise: Earth came back up above the lunar horizon. The crew's 40-minute window of total isolation ended.

What could happen next?

Precedent
The Earthset-to-Earthrise window is the first controlled observation of total Earth occlusion from beyond the Moon, producing psychological and physiological data relevant to multi-year deep-space mission design.

Primary parallel: Apollo 8 astronaut Bill Anders photographed Earthrise in December 1968, producing one of the most reproduced images of the 20th century and triggering a wave of environmental awareness. That image was taken from 70-mile lunar orbit, with Earth clearly visible. The Artemis II crew experienced the inverse: Earthset, then 40 minutes without Earth in any window, then Earthrise.

Counter-parallel: Apollo 11's Command Module pilot Michael Collins orbited the Moon alone for 28 hours while Armstrong and Aldrin landed, spending time behind the Moon in full blackout repeatedly. Collins has described the period as unexpectedly peaceful rather than isolating. His experience is the closest historical parallel, though he was orbiting rather than on a flyby arc.

Consensus view: University College London's Division of Psychology and Language Sciences research on overview effects in spaceflight suggests that losing Earth from direct view, rather than merely shrinking it, creates a qualitatively different cognitive experience that no simulation or training can fully replicate. The Earthset-to-Earthrise window is of significant interest to space psychology researchers.

Counter-view: European Space Agency astronaut training division psychologists, drawing on ISS cupola window research, have noted that the overview effect varies substantially by individual. Some crew members report that Earth disappearing from view intensifies the experience; others report feeling relief from the constant reminder of home. Pre-flight self-reporting does not predict individual response.

Key tension: Whether data collected by the ARCHeR wristbands during the Earthset-to-Earthrise window captures physiological correlates of the psychological experience, which would constitute the first objective measurement of the overview effect's absence phase.

Mentions:Orion →Reid Wiseman →Jeremy Hansen →Prima →Artemis II →ARCHeR →Apollo 8 →Artemis I →Earthset →Earthrise →European Space Agency →Apollo 17 →

First Reported In

Update #5 · Records fall while Orion goes silent

· 6 Apr 2026

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Different Perspectives

ESA

The European Service Module has operated without anomaly for five consecutive days, with the OMS-E engine's translunar injection precision directly responsible for eliminating both correction burns. ESA's hardware contribution is the mission's highest-performing subsystem.

NASA

NASA cancelled a second consecutive outbound correction burn and confirmed Orion in lunar gravitational dominance, while declining to publish any crew radiation dose data through a complete G3 storm cycle. Bipartisan congressional rejection of its $18.8 billion FY2027 budget proposal means the agency faces a political fight even as its spacecraft performs above expectations.

Dual-framework nations

Signing both the Artemis Accords and the ILRS framework is rational hedging, not defection; smaller nations maximise access without exclusive commitment. Lunar governance is genuinely multipolar, and the US coalition count of 61 overstates exclusivity.

Boeing / Northrop Grumman

SLS component production spans more than 40 US states, giving the industrial base strong political protection regardless of commercial alternatives. Congressional mandates guarantee contracts through FY2029, insulating the supply chain from technical programme changes.

NASA Office of Inspector General

The IRB heat shield findings should have been published before launch. The Starship HLS is two years behind schedule with a worsening manual control dispute. NASA has no crew rescue capability for lunar surface operations. The programme is proceeding with documented, unresolved risks.

US Congress

The One Big Beautiful Bill Act mandates $1.025 billion per year for SLS through FY2029 regardless of NASA's restructuring. Congress is preserving the employment base SLS components provide across more than 40 states, independent of whether the technical architecture requires the rocket beyond five missions.