Death Star is the name of a number of fictional mobile space stations and galactic superweapons featured in the Star Wars space opera franchise. The first Death Star is stated to be more than 100 km to 160 km in diameter, depending on source. It is crewed by an estimated 1.7 million military personnel and 400,000 droids. One blast of its superweapon delivers energy comparable to that released by the Sun in an entire week. The second Death Star is significantly larger, between 160 km to 900 km in diameter depending on source, and technologically more advanced than its predecessor. Both versions of these moon-sized fortresses are designed for massive power projection capabilities, capable of destroying multiple naval fleets or entire planets with one blast from their superlasers.