GEOFFREY E. PERRY - NEWSPAPER PHOTOGRAPH SIGNED CIRCA 1971 CO-SIGNED BY: ROBERT CHRISTY - HFSID 81442
GEOFFREY PERRY and ROBERT B. CHRISTY Famed Kettering Group physics teacher and his brilliant student sign their names in blue ink Newspaper photograph signed: "Geoff Perry" and "R. D. Christy" in blue ink. 4½x6 newspaper photograph of Robert B.
Sale Price $180.00
GEOFFREY PERRY and ROBERT B. CHRISTY
Famed Kettering Group physics teacher and his brilliant student sign their names in blue ink
Newspaper photograph signed: "Geoff Perry" and "R. D. Christy" in blue ink. 4½x6 newspaper photograph of Robert B. Christy listening to signals, affixed to 4¾x6½ paper. Original newspaper article also affixed to paper. Geoffrey Perry (1927-2000) was a renowned physics teacher at the famed Kettering Grammar School in Northamptonshire, United Kingdom, who discovered alongside his colleague Derek Slater and their students, the existence of the previously-secret Plesetsk Cosmodrome (a Russian spaceport) in 1966 by analyzing the Cosmos 112 satellite. Their satellite tracking experiment was performed using inexpensive shortwave radio equipment and the properties from the Doppler Effect. The information was most likely already discovered by Western intelligence, but was classified; therefore, the Kettering group played an important role in making Soviet space program information public. Perry was awarded a Member of the British Empire Award in 1973, as well as a Jackson- Gwilt Medal from the Royal Astronomical Society in 1974. Robert D. Christy was one of Perry's students from Kettering (1967-1970), and was one of the leading students in the finding of the Plesetsk Cosmodrome. A Fellow of the British Interplanetary Society, he now manages the Zarya website, devoted to collecting and analyzing space events. Very irregularly cut. Very toned. Edges frayed. Very creased and worn throughout. Otherwise, fine condition.
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