Fighting machine (The War of the Worlds) the tripods' main body and the aliens' heads resemble cuttlefish. In Pendragon Pictures' low-budget, direct-to-DVD "H.G. Wells' The War of the Worlds" (aka "Invasion" internationally or "War of the Worlds"), the only Victorian-set adaptation of Wells' novel, the tripod fighting machine design is loosely based on the look of a praying mantis, which, according to director Timothy Hines, was a favorite insect of H. G. Wells. Tripods have a large, free-moving head atop the smaller main body, giving its sole Martian occupant a panoramic view. It has four thick, metallic tentacles, which are held on high, made up of boxy-looking
The War of the Worlds 1900 echo scientific ideas of the time, including Pierre-Simon Laplace's nebular hypothesis, Charles Darwin's theory of natural selection, and Gustav Kirchhoff's theory of spectroscopy. These scientific ideas combined to present the possibility that planets are alike in composition and conditions for the development of species, which would likely lead to the emergence of life at a suitable geological age in a planet's development. By the time Wells wrote "The War of the Worlds" there had been three centuries of observation of Mars through telescopes. Galileo in 1610 observed the planet's phases, and in 1666 Giovanni Cassini identified the polar ice