The problem of active SETI: An overview

Musso, Pierre

doi:10.1016/j.actaastro.2011.12.019

Cited by 46 publications

(15 citation statements)

References 27 publications

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“…Lastly, we are confronted with the factor f cs in (7). While the pros and cons of active SETI have been extensively debated (Musso, 2012;Shostak, 2013;Buchanan, 2016;Vakoch, 2016), it is worth recalling that the Arecibo telescope has already been used to make a broadcast in 1974. We will work with an optimistic fiducial estimate of unity for f cs , but a smaller value cannot be ruled out; see Shostak (2015) for a related discussion.…”

Section: Number Of Worlds Detectable Through Technosignaturesmentioning

confidence: 99%

Relative Likelihood of Success in the Search for Primitive versus Intelligent Extraterrestrial Life

Lingam

Loeb

2019

Astrobiology

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We estimate the relative likelihood of success in the searches for primitive versus intelligent life on other planets. Taking into account the larger search volume for detectable artificial electromagnetic signals, we conclude that both searches should be performed concurrently, albeit with significantly more funding dedicated to primitive life. Based on the current federal funding allocated to the search for biosignatures, our analysis suggests that the search for extraterrestrial intelligence (SETI) may merit a federal funding level of at least $10 million per year, assuming that the average lifetime of technological species exceeds a millennium.

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Section: Number Of Worlds Detectable Through Technosignaturesmentioning

confidence: 99%

Relative Likelihood of Success in the Search for Primitive versus Intelligent Extraterrestrial Life

Lingam

Loeb

2019

Astrobiology

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“…Some research areas focus on the type of messages that should be broadcast if/when METI becomes active and on the content of these messages (Eliott, 2011b, 2011c; Ollongren and Vakoch, 2011; Vakoch, 2011b, 2011c; Musso, 2012). Since physical and mathematical principles are universal, they can be considered part of a universal heritage and a good starting point for composing messages (Ilhan and Linscott, 2011; Azua-Bustos and Vega-Martinez, 2013).…”

Section: Expanding the N Horizonmentioning

confidence: 99%

Alien Mindscapes—A Perspective on the Search for Extraterrestrial Intelligence

Cabrol

2016

Astrobiology

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Advances in planetary and space sciences, astrobiology, and life and cognitive sciences, combined with developments in communication theory, bioneural computing, machine learning, and big data analysis, create new opportunities to explore the probabilistic nature of alien life. Brought together in a multidisciplinary approach, they have the potential to support an integrated and expanded Search for Extraterrestrial Intelligence (SETI1), a search that includes looking for life as we do not know it. This approach will augment the odds of detecting a signal by broadening our understanding of the evolutionary and systemic components in the search for extraterrestrial intelligence (ETI), provide more targets for radio and optical SETI, and identify new ways of decoding and coding messages using universal markers. Key Words: SETI—Astrobiology—Coevolution of Earth and life—Planetary habitability and biosignatures. Astrobiology 16, 661–676.

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“…There have even been calls for a moratorium on deliberate METI transmissions until international agreements for how to proceed have been reached [19]. Others have argued that METI broadcasts do not pose a significant risk [7,[20][21][22][23] because any extraterrestrial watchers would be able to establish the presence of life on Earth by the spectrum of reflected ultraviolet, optical, and near-infrared sunlight into space from the surface and the atmosphere. An extraterrestrial watcher could also potentially learn of our technological civilization by detecting artificial nighttime lighting of large urban areas [24].…”

Section: Introductionmentioning

confidence: 99%

The benefits and harm of transmitting into space

et al. 2013

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Deliberate and unintentional radio transmissions from Earth propagate into space. These transmissions could be detected by extraterrestrial watchers over interstellar distances. Here, we analyze the harms and benefits of deliberate and unintentional transmissions relevant to Earth and humanity. Comparing the magnitude of deliberate radio broadcasts intended for messaging to extraterrestrial intelligence (METI) with the background radio spectrum of Earth, we find that METI attempts to date have much lower detectability than emissions from current radio communication technologies on Earth. METI broadcasts are usually transient and several orders of magnitude less powerful than other terrestrial sources such as astronomical and military radars, which provide the strongest detectable signals. The benefits of radio communication on Earth likely outweigh the potential harms of detection by extraterrestrial watchers; however, the uncertainty regarding the outcome of contact with extraterrestrial beings creates difficulty in assessing whether or not to engage in long-term and large-scale METI.

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The problem of active SETI: An overview

Cited by 46 publications

References 27 publications

Relative Likelihood of Success in the Search for Primitive versus Intelligent Extraterrestrial Life

Relative Likelihood of Success in the Search for Primitive versus Intelligent Extraterrestrial Life

Alien Mindscapes—A Perspective on the Search for Extraterrestrial Intelligence

The benefits and harm of transmitting into space

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