than humans. The Drake equation speculates about the existence of sapient life elsewhere in the universe. The science of extraterrestrial life is known as Extraterrestrial life, or alien life (colloquially aliens), is life that originates from another world rather than on Earth. No extraterrestrial life has yet been detected. Such life might range from simple forms such as microbes to intelligent beings, possibly bringing forth civilizations that might be far more, or far less, advanced than humans. The Drake equation speculates about the existence Us… The science that searches and studies life in the universe, both on Earth and elsewhere, is called astrobiology. With the study of Earth's life, the only known form of life, astrobiology seeks to study how life starts and evolves and the requirements for its continuous existence. This helps to determine what to look for when searching for life in other celestial bodies. This is a complex area of study, and uses the combined perspectives of several scientific disciplines, such as astronomy, biology, chemistry, geology, oceanography, and atmospheric sciences. The scientific search for extraterrestrial life is being carried out both directly and indirectly. As of 30 July 2026, there are 6,333 confirmed exoplanets in 4,740 planetary systems, with 1,056 systems having more than one planet. Other planets and moons in the Solar System hold the potential for hosting primitive life such as microorganisms. As of 8 February 2021, an updated status of studies considering the possible detection of lifeforms on Venus (via phosphine) and Mars (via methane) was reported. Extraterrestrial life, or alien life (colloquially aliens), is life that originates from another world rather than on Earth. No extraterrestrial life has yet been detected. Such life might range from simple forms such as microbes to intelligent beings, possibly bringing forth civilizations that might be far more, or far less, advanced than humans. The Drake equation speculates about the existence of sapient life elsewhere in the universe. The science of extraterrestrial life is known as astrobiology. Speculation about inhabited worlds beyond Earth dates back to antiquity. A key debate centers on contacting extraterrestrial intelligence: some advocate active attempts, while others warn it could be risky, given human history of exploiting other societies. == Context == Using Big Bang models for the timeline of the universe, it was too hot for life for the first 15 million years and the elements of organic life, created through stellar fusion, did not exist until at least 50 million years. The first organic compounds may have formed in the protoplanetary disk of dust grains that would eventually create rocky planets like Earth. The universe is composed of all similar structures in existence. The immense distances between celestial objects are a difficulty for studying extraterrestrial life. So far, humans have only set foot on the Moon and sent robotic probes to other planets and moons in the Solar System. Although probes can withstand conditions that may be lethal to humans, the distances cause time delays: the New Horizons took nine years after launch to reach Pluto. No probe has ever reached extrasolar planetary systems. According to this argument, made by scientists such as Carl Sagan and Stephen Hawking, it would be improbable for life not to exist somewhere else other than Earth. 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. Other authors consider instead that life in the cosmos, or at least multicellular life, may actually be rare. Thus, in their view, what is seen as the Fermi Paradox is simply science overcoming a historical presumption that never adequately recognized the importance of discoveries about, for example, the nature of planets or the origin of life. == Biochemical basis == If extraterrestrial life exists, it could range from simple microorganisms and multicellular organisms similar to animals or plants, to complex alien intelligences akin to humans. When scientists talk about extraterrestrial life, they consider all those types. When it was finally proved wrong, it not only meant that Earth was not the center of the universe, but also that the lights seen in the sky were not just lights, but physical objects. The notion that life may exist in them as well soon became an ongoing topic of discussion, although one with no practical ways to investigate. The possibility of extraterrestrials remained a widespread speculation as scientific discovery accelerated. William Herschel, the discoverer of Uranus, was one of many 18th–19th-century astronomers who believed that the Solar System is populated by alien life. Other scholars of the period who championed "cosmic pluralism" included Immanuel Kant and Benjamin Franklin. By the 21st century, it was accepted that multicellular life in the Solar System can only exist on Earth, but the interest in extraterrestrial life increased regardless. This is a result of the advances in several sciences. The knowledge of planetary habitability allows to consider on scientific terms the likelihood of finding life at each specific celestial Life may still exist elsewhere in the Solar System in unicellular form, but the advances in spacecraft allow to send robots to study samples in situ, with tools of growing complexity and reliability. Although no extraterrestrial life has been found and life may still be just a rarity from Earth, there are scientific reasons to suspect that it can exist elsewhere, and technological advances that may detect it if it does. Many scientists are optimistic about the chances of finding alien life. In the words of SETI's Frank Drake, "All we know for sure is that the sky is not littered with powerful microwave transmitters".

About Astrobiology | Astrobiology This website is currently being migrated. For the most up-to-date astrobiology news, resources, and community announcements, please visit our new home at science.nasa.gov/astrobiology Home  About Astrobiology Life, Here and Beyond Astrobiology is the study of the origin, evolution, and distribution of life in the universe. Written by Marc Kaufman Ask most anyone whether life exists on other planets and moons, and the answer you’ll get is a confident “yes!” Going back decades (and in many ways generations), we’ve been introduced to a menagerie of extraterrestrials good and bad. Their presence suffuses our entertainment and culture, and we humans seem to have an almost innate belief-or is it a hope-that we are not alone in the universe. But that extraterrestrial presence on regular display is, of course, a fiction. No life beyond Earth has ever been found; there is no evidence that alien life has ever visited our planet. It’s all a story. How did life begin on Earth? Does life exist beyond our home planet? How do we search for it? Credit: NASA This does not mean, however, that the universe is lifeless. While no clear signs of life have ever been detected, the possibility of extraterrestrial biology – the scientific logic that supports it – has grown increasingly plausible. That is perhaps the single largest achievement of the burgeoning field of astrobiology, the broad-based study of the origins of life here and the search for life beyond Earth. By exploring and illuminating the world of extreme life on Earth, by experimenting with how life here began, by understanding more about the chemical makeup of the cosmos, by testing for habitability on missions to Mars, Jupiter’s moon Europa, Saturn’s moon Titan, and beyond, an enormous body of science is being assembled to analyze and explain the origins, characteristics and possible extraterrestrial dimensions of life. And unlike the ETs and star-ship invaders of popular culture, these discoveries are, and will be, real. Artist’s rendering of NASA’s Cassini spacecraft observing a sunset through Titan’s hazy atmosphere. Those questions remain unanswered, but this much is known: If a second genesis occurred on Mars (or on Jupiter’s moon Europa, Saturn’s moon Enceladus, or anywhere else in our solar system), then the likelihood increases substantially that many other forms of life exist on those billions of exoplanets and exomoons now known to orbit distant stars and planets. One origin of life on Earth could be the result of a remarkable and inexplicable pathway to life. Two origins in one solar system strongly suggests that life is commonplace in the universe. Sounds of Space Cassini's magnetometer detection of an atmosphere on Enceladus. A sampling of examples: • What were the steps that led inanimate materials – rocks, sediments, organic compounds, water – to come together and build living organisms, with replicating genes, cell walls, and the ability to reproduce? • What led to the proliferation of new life forms on Earth? • How do water and essential organic compounds arrive on planets and moons, and how do they interact with the planets and moons they land on? • Is it possible to learn from chemicals and minerals on the surface of planets whether microbes might live there, including beneath the planet’s surface? • Is it possible, likely even, that life exists elsewhere based on elements other than carbon and a system different than DNA ? Could such life even exist here on Earth, but is as yet undetected? Sounds of Space The Huygens Probe Landing on Saturn’s Moon Titan These and so many other lines of research shed light on how to identify and find extraterrestrial life, as well as how to understand the origin of life on Earth. The two issues are inseparable. The Atacama desert is one of the driest places on Earth, making it a good Mars analogy.

The relevance of the study. In the context of religious and philosophical movements of the «New Age» gained channeling phenomenon – «laying channel», «transmission channel» information from the consciousness that is not in human form, to the individual and humanity as a whole. In the socio-cultural environment of the postmodern channeling reflects the problem of finding extraterrestrial intelligence (ETI; «ETC-problem»; SETІ problem) and to establish contacts with them, this problem has a different projection, important philosophical and anthropological measurements in culture. Investigation of mechanisms of constructing virtual superhuman personalities in the world web is not only of interest for further analysis of the problem of extraterrestrial intelligence (ETI), but also to extend subject field of anthropology of the Internet as an important area of philosophical and anthropological studies. The purpose of the study. Analysis of the phenomenon of channeling as a projection of the fundamental problems of life ETI, its representation on the World Wide Web, the impact on the archaism of postmodern culture posing problems meta an-thropological dimensions of existence in the universe of reason and contact with him in the doctrinal grounds channeling. Analysis of research on the problem and its empirical base. Clustered nature of the problem of ETI and channeling its element involves the widespread use of radio astronomy paradigm works carriers solve CETI; work in anthropolog

The relevance of the study. In the context of religious and philosophical movements of the «New Age» gained channeling phenomenon – «laying channel», «transmission channel» information from the consciousness that is not in human form, to the individual and humanity as a whole. In the socio-cultural environment of the postmodern channeling reflects the problem of finding extraterrestrial intelligence (ETI; «ETC-problem»; SETІ problem) and to establish contacts with them, this problem has a different projection, important philosophical and anthropological measurements in culture. Investigation of mechanisms of constructing virtual superhuman personalities in the world web is not only of interest for further analysis of the problem of extraterrestrial intelligence (ETI), but also to extend subject field of anthropology of the Internet as an important area of philosophical and anthropological studies. The purpose of the study. Analysis of the phenomenon of channeling as a projection of the fundamental problems of life ETI, its representation on the World Wide Web, the impact on the archaism of postmodern culture posing problems meta an-thropological dimensions of existence in the universe of reason and contact with him in the doctrinal grounds channeling. Analysis of research on the problem and its empirical base. Clustered nature of the problem of ETI and channeling its element involves the widespread use of radio astronomy paradigm works carriers solve CETI; work in anthropolog

What conditions would be required elsewhere in the Universe to support life? Perhaps we can explore this possibility by studying the conditions in which Earthly extremophiles exist. We fi nd that many living forms can exist under vastly different circumstances than what we would ordinarily think would be required to support life. This chapter describes some of them, then extends these conditions to outer space to infer the possible existence of extraterrestrial life. Finally, the several decade Search for Extraterrestrial Intelligence, SETI, is described.

This study examines the communication of astrobiology and the Search for Life Elsewhere (SLE) in academic papers, press releases, and news articles over three decades. Through a quantitative content analysis, it investigates the prevalence of speculations and promises/expectations in these sources, aiming to understand how research results are portrayed and their potential impact on public perception and future research directions. Findings reveal that speculations and promises/expectations are more frequent in news articles and press releases compared to academic papers. Speculations about co

Three advances are proposed as a pathway to the cataclysmic event of our first encounter with intelligent extraterrestrial beings. First, discovery of very large numbers of extraterrestrial planets, “exoplanets” (possibly as many as1023 in our Universe); second, introduction of electronic components into the human body evolving into a cybernetic and biological “cyborg,” a model for an extraterrestrial being Cyborgs might allow advanced civilizations to endure hundreds of thousands of years. Third, the recent development of high-frequency gravitational wave (HFGW) detectors, the communication means of choice for an advanced cyborg civilization since they are not easily absorbed like electromagnetic radiation. Six HFGW detectors are presented for application to our first encounter with intelligent extraterrestrial beings. Numerical estimates are made for the failure of extraterrestrial civilizations such that no two exist at the same time (Fermi’s Paradox). It is concluded that there might remain at least ≈1.48 × 108 Worlds intercommunicating with HFGWs at any one time in any one region of our Universe. The predicted form of extraterrestrial beings is by means of animaginary, but based upon comprehensively documented and detailed projection of the evolution of “Earthling” homosapiens, to become “cyborgs.” It is proposed that such long-living cyborg forms of intelligent beings would be encountered by us. The first cataclysmic encounter with them is expected to be interception of

Denna uppsats handlar om människor som tror på existensen av utomjordiskt liv och påstår att det har skett möten och kontakter mellan människor och livsformer från andra planeter. Mitt syfte har varit att undersöka närmare vad tron på utomjordiskt liv kan innebära och om det finns religiösa inslag i detta och om detta gestaltar sig som en religion eller livsåskådning. Jag har studerat materialet utifrån ett religionsvetenskapligt perspektiv och sökt efter att åskådliggöra om den sortens övertygelse bildar grunden för en livsåskådning eller religion och vad det kan innebära. Vad har dessa männi

reconnaissance of extrasolar star systems in a search for human habitable worlds and extraterrestrial life . A preliminary design for a self-reproducing

collision with Earth, rapid changes in the polar icecaps, discovery of extraterrestrial life , some major accomplishment in space by another nation, or a credible

planets exist in the universe and whether any of them might harbor recogniz- able life forms. Almost … astronomy and the universe held sway. Then, in the last centuries of the first millennium, in the eastern Mediterranean … form of life can possibly exist in the universe, then it must exist. The universe, he claimed, contains “an

have been interested in the possibility of life on other planets. In the 1600s, people discovered … may be simple life forms on it that the probes have not detected. In the future, more probes … m>~ m u y I Extraterrestrial Life in Books and Magazines In the 1920s and 1930s, magazines