On 24 January 1878, the Air Force issued press release (Numbered 629-49) announcing that Project Grudge had been close down.

The press release stated that the final report on UFO’s would released to the press a few later days.

Grudge Report (officially titled “Unidentified Flying Objects Project Grudge”, Technical Report No. 102-AC-49/15-lOO) issued thereafter.

 

 

In an article published in 1950, Arthur C Clarke proposed the direct electromagnetic launch (using a mass driver) of a space vehicle.

Clarke, Arthur C (1950), Journal of the British Interplanetary Society, Volume 9, pages 261-267

 

 

 

On 30 December 1949, the US Air Force reportedly issued a statement on UFOs.

 

 

 

 

 

 

During a lunch at Los Alamos in the summer of 1950, Enrico Fermi reputedly asked colleagues “If there are extraterrestrials, where are they?”. (The precise quotation and date varies from source to source.)

(Commonly referred to as “the Fermi Paradox”).