Martian (The War of the Worlds) antagonists are the "squid-walkers", a cybernetic race of tripods controlled by a single entity inside their mothership. Inside the mothership, humans are kept alive and their blood is filtered, homogenised, and fed to the aliens. They are killed by infected blood injected into the mothership's core, telepathically shutting down the Tripods. In the film "H.G. Wells' The War of the Worlds", the Martians are large, bulkish creatures, keeping the two large eyes and tentacles described in the book; but do not seem to possess the beak-like mouth. They meet the same fate as the originals, having caught Earthly diseases. Their
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