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Through science fiction, the speculative biology of extraterrestrial organisms has a strong presence in popular culture. The eponymous monster of Alien (1979), particularly its life cycle from egg to parasitoid larva to 'Xenomorph', is thought to be based on the real habits of parasitoid wasps in biology. [41]
The book ends by examining the question of whether humanity is a parochial Earth-centric concept, or whether intelligent alien life should also be considered human. The book draws on the work of paleontologist Simon Conway Morris on convergent evolution , [ 9 ] and on Universal Darwinism , popularised by Richard Dawkins .
Extraterrestrial life, or alien life ... methane, and ethane, and even a cycle similar to Earth's ... Those speculative structures would cause an excess infrared ...
Scientists employ many methods in the search for alien life. One approach is using both terrestrial and space-based advanced telescopes for some good, old-fashioned stargazing.
Alien life could be found in a tiny grain of ice, researchers have said. The discovery suggests that upcoming telescopes might be able to spot extraterrestrial life relatively soon.
The possibility of life-forms being based on "alternative" biochemistries is the topic of an ongoing scientific discussion, informed by what is known about extraterrestrial environments and about the chemical behaviour of various elements and compounds. It is of interest in synthetic biology and is also a common subject in science fiction.
A number of recent discoveries also strongly suggest that alien life exists, either in our own solar system or beyond. The best scientific arguments for why aliens exist Skip to main content
Extraterrestrial life forms might, for example, choose to allow contact once the human species has passed certain technological, political, and/or ethical standards. Alternatively, they may withhold contact until humans force contact upon them, possibly by sending a spacecraft to an extraterrestrial-inhabited planet. In this regard, reluctance ...