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Semper Mars: Book One of the Heritage Trilogy is a military science fiction novel by American writer Ian Douglas. It is the first novel in the Heritage Trilogy . Plot introduction
The events of the Heritage Trilogy span from 2040 to 2067. In Semper Mars, evidence of an alien civilization that may have intervened in human evolution threatens to throw the Earth into chaos and war when discovered by scientists in the subterranean ruins on Mars.
An extraterrestrial civilization might bring to Earth pathogens or invasive life forms that do not harm its own biosphere. [45] Alien pathogens could decimate the human population, which would have no immunity to them, or they might use terrestrial livestock or plants as hosts, causing indirect harm to humans. [45]
For example, during the Barney and Betty Hill incident, the first recorded claim of an alien abduction, the couple reported that they were abducted and experimented on by aliens with oversized heads, big eyes, pale grey skin, and small noses, a description that eventually became the grey alien archetype once used in works of fiction.
The Kardashev scale is a speculative method of measuring a civilization's level of technological advancement, based on the amount of energy a civilization is able to utilize. [11] The Drake equation is a probabilistic framework used to estimate the number of active, communicative extraterrestrial civilizations in the Milky Way galaxy. [12]
It turns out the Milky Way may have once been full of bustling alien civilizations, but they are all dead now. The paper, which is a preprint and awaiting peer review, amounts to an update to the ...
Xenoarchaeology, a branch of xenology dealing with extraterrestrial cultures, is a hypothetical form of archaeology that exists mainly in works of science fiction. The field is concerned with the study of the material remains to reconstruct and interpret past life-ways of alien civilizations.
Jesus on Mars is a 1979 science fiction novel by American writer Philip José Farmer, set on Mars and involving an alien civilization. It makes social commentary on a just society and on religious belief .