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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.
Besides, even if there is an advanced extraterrestrial civilization, there is no guarantee that it is transmitting radio communications in the direction of Earth. The length of time required for a signal to travel across space means that a potential answer may arrive decades or centuries after the initial message. [98]
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]
The alien invasion is a common trope of alien fiction. (AI generated) Extraterrestrials in fiction are portrayed in several different ways. Extraterrestrial intelligence may be lower, similar, higher or exponentially higher than that of humans, or completely alien and impossible to be compared. [6]
Richard Charles Hoagland (born April 25, 1945) is an American author and a proponent of various conspiracy theories about NASA, lost alien civilizations on the Moon, and on Mars and other related topics.
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 ...
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 .