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Speculative evolution is a subgenre of science fiction and an artistic movement focused on hypothetical scenarios in the evolution of life, and a significant form of fictional biology. [1] It is also known as speculative biology [ 2 ] and it is referred to as speculative zoology [ 3 ] in regards to hypothetical animals . [ 1 ]
The genetically engineered humans of the future, in total numbering about 40 species through the book, occur in several different and diverse forms, with genetically engineered forms first being slave races created to survive underwater and in space without the need of protective gear and suits, described as the "ultimate triumphs of the ...
By the early 1860s, as summarized in Charles Lyell's 1863 book Geological Evidences of the Antiquity of Man, it had become widely accepted that humans had existed during a prehistoric period—which stretched many thousands of years before the start of written history. This view of human history was more compatible with an evolutionary origin ...
In total, over a hundred different invented animal species are featured in the book, described as part of fleshed-out fictional future ecosystems. Reviews for After Man were highly positive and its success spawned two follow-up speculative evolution books which used new fictional settings and creatures to explain other natural processes: The ...
[15] [16] Its long history lends itself to extensive speculation and hoaxes that have arisen from meteoritic events. In contrast, pseudo-panspermia is the well-supported hypothesis that many of the small organic molecules used for life originated in space, and were distributed to planetary surfaces.
Snaiad is an exoplanet slightly larger than Earth located outside of the Milky Way. [1] The planet is home to a large variety of fauna, which Kösemen has designed and meticulously documented, along with creating maps and a geopolitical story of Snaiad as it undergoes the process of human colonization about 300 years in the future, [1] [2] Snaiad being one of Earth's first interstellar colonies.
A different take on Darwinism is the idea, popular from the 1950s onwards, that humans will evolve more or less godlike mental capacity, as in Arthur C. Clarke's 1950 Childhood's End and Brian Aldiss's 1959 Galaxies Like Grains of Sand. Another science fiction theme is the replacement of humanity on Earth by other species or intelligent machines.
The PAH world hypothesis is a speculative hypothesis that proposes that polycyclic aromatic hydrocarbons (PAHs), known to be abundant in the universe, [177] [178] [179] including in comets, [180] and assumed to be abundant in the primordial soup of the early Earth, played a major role in the origin of life by mediating the synthesis of RNA ...