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- W3100820030 abstract "Deliberate and unintentional radio transmissions from Earth propagate into space. These transmissions could be detected by extraterrestrial watchers over interstellar distances. This article analyzes the harm 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 most probably outweigh the potential harm 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." @default.
- W3100820030 created "2020-11-23" @default.
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- W3100820030 date "2013-02-01" @default.
- W3100820030 modified "2023-10-12" @default.
- W3100820030 title "The benefits and harm of transmitting into space" @default.
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- W3100820030 doi "https://doi.org/10.1016/j.spacepol.2012.11.006" @default.
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