A parliamentary speaker might claim $5000 to make a short chopper ride to Geelong, but the travel expenses for a trip to the moon are a little more austere.

Buzz Aldrin, the second man on the moon, has revealed a fascinating piece of memorabilia on social media: the travel voucher he billed NASA for his historic journey into space.

Buzz Aldrin during the lunar landing mission on July 20, 1969. Credit:NASA

The bureaucratic expense form is beautifully understated about the nature of Mr Aldrin's travel, simply listing the destination as "moon" by "government spacecraft".

The full return itinerary from Houston also includes Mr Aldrin's stay in the Pacific Ocean on the USS Hornet, the ship which recovered Apollo 11.