Is it possible to have an extraterrestrial life in this universe.
Answers
Answer:
Extraterrestrial life[n 1] is hypothetical life forms that may be living in places other than the planet Earth and which did not originate on Earth. Such life might range from simple prokaryotes (or comparable life forms) to intelligent beings and even sapient beings, possibly bringing forth civilizations that might be far more advanced than humanity.[1][2][3] The Drake equation speculates about the existence of sapient life elsewhere in the universe. The science of extraterrestrial life in all its forms is known as astrobiology.
Some major international efforts to search for extraterrestrial life. Clockwise from top left:
The search for extrasolar planets (image: Kepler telescope)
Listening for extraterrestrial signals indicating intelligence (image: Allen array)
Robotic exploration of the Solar System (image: Curiosity rover on Mars)
Since the mid-20th century, active ongoing research has taken place to look for signs of extraterrestrial life. This encompasses a search for current and historic extraterrestrial life, and a narrower search for extraterrestrial intelligent life. Depending on the category of search, methods range from the analysis of telescope and specimen data[4] to radios used to detect and send communication signals.
The concept of extraterrestrial life, and particularly extraterrestrial intelligence, has had a major cultural impact, chiefly in works of science fiction. Over the years, science fiction communicated scientific ideas, imagined a wide range of possibilities, and influenced public interest in and perspectives of extraterrestrial life. One shared space is the debate over the wisdom of attempting communication with extraterrestrial intelligence. Some encourage aggressive methods to try for contact with intelligent extraterrestrial life. Others—citing the tendency of technologically advanced human societies to enslave or wipe out less advanced societies—argue that it may be dangerous to actively call attention to Earth.[5][6]
A "Confidence of Life Detection" scale (CoLD) for reporting evidence of life beyond Earth has been proposed.[7][8]
Explanation:
General Edit
Astronomers have discovered stars in the Milky Way galaxy that are almost 13.6 billion years old.[9]
Alien life, such as microorganisms, has been hypothesized to exist in the Solar System and throughout the universe. This hypothesis relies on the vast size and consistent physical laws of the observable universe. According to this argument, made by scientists such as Carl Sagan and Stephen Hawking,[10] as well as notable personalities such as Winston Churchill,[11][12] it would be improbable for life not to exist somewhere other than Earth.[13][14] This argument is embodied in the Copernican principle, which states that Earth does not occupy a unique position in the Universe, and the mediocrity principle, which states that there is nothing special about life on Earth.[15] The chemistry of life may have begun shortly after the Big Bang, 13.8 billion years ago, during a habitable epoch when the universe was only 10–17 million years old.[16][17] Life may have emerged independently at many places throughout the universe. Alternatively, life may have formed less frequently, then spread—by meteoroids, for example—between habitable planets in a process called panspermia.[18][19] In any case, complex organic molecules may have formed in the protoplanetary disk of dust grains surrounding the Sun before the formation of Earth.[20] According to these studies, this process may occur outside Earth on several planets and moons of the Solar System and on planets of other stars.[20]
Since the 1950s, astronomers have proposed that "habitable zones" around stars are the most likely places for life to exist. Numerous discoveries of such zones since 2007 have generated numerical estimates of many billions of planets with Earth-like compositions.[21] As of 2013, only a few planets had been discovered in these zones.[22] Nonetheless, on 4 November 2013, astronomers reported, based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of Sun-like stars and red dwarfs in the Milky Way,[23][24] 11 billion of which may be orbiting Sun-like stars.[25] The nearest such planet may be 12 light-years away, according to the scientists.[23][24] Astrobiologists have also considered a "follow the energy" view of potential habitats.[26][27]
Answer:
Yes I think there are possibilities .
Explanation:
As we can not say that we are alone in this entire huge universe or we should say Multiverse there are much more galaxies in our universe and there are much more universes in a Multiverse . so in this we can't say that we are alone . Hence there are possibilities to have an extraterrestrial life in our universe .