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With only a few humans having ever entered space let alone visited the moon, it's hard to judge what one might need for the trip.

But one of the men who has set foot on the moon has revealed exactly what he claimed in the way of expenses for the trip.

Buzz Aldrin has shared his documentation from his trip which included the travel voucher for his trip, showing that it cost just $33.31 - or £21.38 - to make the round trip from Houston, Texas.

The paltry sum is thought to include his rental car to get to the launch site at Cape Kennedy.

With an inflation rate between 1969 and 2015 of around 550%, that would make it just $216.59 in today's money, or £139.05.

Other pieces of Apollo 11-related souvenirs which Buzz shared this week online include a custom form which reveals he brought back 'moon dust' and 'moon rock'.

(Image: Twitter)

The 85-year-old shared the unbelievable items from his own history and the world's history of space travel, including forms dated July 24, 1969, signed by Neil Armstrong, the first man on the moon, and Buzz himself, Apollo 11's Lunar Module pilot.

On July 20, Buzz shared memories of the voyage on Twitter, saying: "It's the 46th Anniversary Apollo 11 moon landing. Mankind's first small step. The next giant leap will be #Mars."