Seanie Morris from the Midlands Astronomy Club says missions have evolved overtime.
Nasa reckons the first manned spaceflight to the Moon in more than 50 years is "80 per cent ready to go".
The official countdown for Artemis II is due to start this evening, ahead of an expected lift off on Wednesday afternoon.
Four astronauts will fly around the Moon during their 10 days in space.
Seanie Morris from the Midlands Astronomy Club says missions have evolved overtime:
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