The Manna Machine  is an ancient astronaut book by George Sassoon and Rodney Dale which concludes that a machine device was given to the Israelites, when they went on their 40 year journey in the Sinai Desert.
The device was said to create manna, which is thought today to actually be a type of bulate. It explains how the Israelites survived their 40 year wandering in the Sinai Desert. It is said by Sassoon and Dale that a nuclear reactor used to power the manna machine was stored in the Ark of the Covenant. The Ark was supposed to have powered the machine to run continuously, producing manna for six days. On the 7th day it would be taken apart for cleaning so it could run the following week. This is where Sabbath is thought to come from. The knowledge was preserved within the Jewish Kabbalah that the authors claim to have correctly decoded.
- George Sassoon, Rodney Dale, The Manna Machine (London: Sidgwick and Jackson, 1978). ISBN 0-283-98435-X
- George Sassoon, Rodney Dale, "Deus est machina?" in New Scientist, 1 April 1976, pages 22-24 (Volume 70, Number 994) ISSN 0028-6664
- George Sassoon, Rodney Dale, The Kabbalah Decoded: A New Translation of the 'Ancient of Days' Texts of the Zohar (Duckworth, 1978). ISBN 0-7156-1289-1