Physics and Star Wars
To estimate the effects of the second Death Star, Minton looks into its mass. According to estimated data from some students of Lehigh University, the steel mass needed for building one would be around 770 kilograms times the mass cubed in weight. This would give the Death Star of about ten to the power of nineteen kilograms in mass. Using this data, Minton produces equations that lead him to conclude the fragments would hit the moons surface so hard causing craters almost four times the size of the Chicxulub crater in Mexico. This impact would cause a planetary firestorm and vaporize all lifeforms on the moon.
HMS Star (1896)
"Star"s hull was long overall and between perpendiculars, with a beam of and a draught of . Four Reed boilers fed steam at to triple expansion steam engines rated at and driving two propeller shafts. Displacement was light and deep load. Three funnels were fitted, and 91 tons of coal carried. "Star" was contractually required to maintain a speed of for a continuous run of three hours and over during sea trials.