American astronomer, Clyde Tombaugh, discovers Pluto
Pluto with its moons Charon, Nix and Hydra. Image made with Hubble Telescope.
Clyde Tombaugh discovered Pluto while working at the Lowell Observatory in Arizona. Hew was systematically comparing images of the same location in the skies to identify moving objects. The name was suggested by an 11 year old English student Venetia Burney, it was chosen amidst a sea of alternative proposals. Pluto was demoted to a Dward Planet in 2006, after a long debate. To date, Pluto remains largely unexplored. It is widely accepted, however, that Pluto bears more resemblances to Kuiper belt objects, than to planets. In 2015 it will be explored by the New Horizons NASA spacecraft.*
Dr. Robert H. Goddard develops first guidance control system for rocket flight
Goddard achieved guidance of rocket flight by gyroscopic control. Steering was conducted via vanes in the motor blast.*
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