Milkman says that these extracurricular jobs were an effort on the part of the workers to regain their dignity after suffering the degradation of repetitive assembly line work in the factory.
In 1965, military historian and amateur diver Alexander McKee, in conjunction with the British Sub-Aqua Club, initiated a project called 'Solent Ships'.
This decrease in cost allows researchers, hobbyists and even elementary school groups to put simple instruments into LEO or even having them deployed from the ISS.