it was an estimate based on a vague memory of this article https://www.nasaspaceflight.com/2015/04/evaluating-nasas-futuristic-em-drive/ https://www.nasaspacefl

it was an estimate based on a vague memory of this article https://www.nasaspaceflight.com/2015/04/evaluating-nasas-futuristic-em-drive/ https://www.nasaspaceflight.com/2015/04/evaluating-nasas-fut...