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.
Ship of the line
"Henri Grâce à Dieu" (English: "Henry Grace of God"), nicknamed "Great Harry", was another early English carrack. Contemporary with "Mary Rose", "Henri Grâce à Dieu" was 165 feet (50 m) long, weighing 1,000–1,500 tons and having a complement of 700–1,000. It is said that she was ordered by Henry VIII in response to the Scottish ship "Michael", launched in 1511. She was originally built at Woolwich Dockyard from 1512 to 1514 and was one of the first vessels to feature gunports and had twenty of the new heavy bronze cannon, allowing for a broadside. In all, she mounted 43 heavy guns and 141 light guns. She was the first English two-decker, and when launched she was the largest and most powerful warship in Europe, but she saw little action. She was present at the Battle of the Solent against Francis I of France in 1545 (in which "Mary Rose" sank) but appears to have been more of a diplomatic vessel, sailing on occasion with sails of gold cloth. Indeed, the great ships were almost as well known for their ornamental design (some ships, like the "Vasa", were gilded on their stern scrollwork) as they were for the power they possessed.