The Artemis II mission will experience a communications blackout as the spacecraft travels behind the Moon around 23:47 BST on Monday. During this approximately 40-minute period, radio and laser signals connecting the four astronauts to mission control in Houston will be blocked by the lunar body itself, leaving the crew in complete isolation from Earth.
Artemis pilot Victor Glover has characterized this moment as an opportunity for reflection, suggesting the world use the time for prayer and positive thoughts. He told BBC News before launch that the crew hopes people will come together during the blackout. This type of isolation is not unprecedented in spaceflight history. During the Apollo 11 mission in 1969, astronaut Michael Collins experienced a 48-minute communications loss while orbiting the Moon as Neil Armstrong and Buzz Aldrin conducted their lunar surface activities. Collins later described the experience in his 1974 memoir as bringing a sense of peace and tranquility, noting it provided respite from constant mission control communications.
On Earth, the communications blackout will create tension for personnel managing the mission. The Goonhilly Earth Station in Cornwall has been tracking the Orion capsule throughout its journey using a large antenna. Matt Cosby, the station’s chief technology officer, acknowledged the nervous anticipation staff will experience during the signal loss and their relief upon reestablishment of contact.
Space agencies are working to prevent such communication gaps in future lunar operations. The European Space Agency’s Moonlight program is planning to deploy a network of satellites around the Moon to provide continuous 24-hour coverage, including over the far side. Such infrastructure will be essential for establishing a sustainable lunar base and expanding exploration efforts.
During the blackout, the Artemis astronauts will focus on lunar observation, capturing images and studying the Moon’s geological features. Once the spacecraft emerges from the Moon’s shadow and communications are restored, the crew will be able to share their observations and imagery with the world.
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