The Artemis II mission will experience a brief but significant communications blackout when the spacecraft travels behind the Moon. At approximately 23:47 BST on Monday, 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 isolation for roughly 40 minutes.
Artemi pilot Victor Glover has indicated he views this period as an opportunity for reflection, suggesting the world use the time to offer prayers and positive thoughts for the crew’s safe passage. This phenomenon is not unprecedented in space exploration. During the Apollo 11 mission in 1969, astronaut Michael Collins experienced a 48-minute communications loss while orbiting the Moon. In his accounts of that experience, Collins described feelings of profound isolation alongside a sense of peace and tranquility, noting that the radio silence provided a respite from constant mission control communications.
The blackout represents a tense period for personnel monitoring the mission from Earth. The Goonhilly Earth Station in Cornwall has been tracking the Orion capsule throughout its journey and will experience the signal loss alongside the crew. According to Matt Cosby, the facility’s chief technology officer, this marks the first time Goonhilly is tracking a crewed spacecraft, making the communications gap a moment of heightened concern before the signal’s restoration confirms crew safety.
Future lunar operations may eliminate such blackouts. The European Space Agency’s Moonlight programme is developing a network of satellites around the Moon to provide continuous communication coverage, addressing the need for uninterrupted connectivity as space agencies establish permanent lunar bases and expand exploration efforts. During their time without Earth contact, the Artemis astronauts will focus on lunar observation, capturing images and studying the Moon’s geological features before resuming communications with mission control.
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