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.
Red Top (missile)
Red Top was originally a rationalised, upgraded version of the earlier Firestreak air-to-air missile. In 1956, de Havilland Propellers started work on the Blue Jay Mark 4 (its development codename) and Firestreak Mk. IV. Such were the changes that it was effectively a new missile. It arranged its components in more logical fashion than the Firestreak (which had its warhead in the tail), with an improved "Violet Banner" seeker, "Green Garland" IR fuze, and a more powerful "Linnet" booster rocket. It also had a larger warhead, at 31 kg (68.3 lb) against 22.7 kg (50 lb), and which was now an expanding rod type.