English
Related papers

Related papers: How Much SETI Has Been Done? Finding Needles in th…

200 papers

The Search for Extraterrestrial intelligence (SETI) is a scientific and cultural effort seeking evidence of intelligent life beyond earth. Radio SETI observes the radio spectrum for ''technosignatures" that could be produced by an advanced…

Instrumentation and Methods for Astrophysics · Physics 2021-09-29 Kenneth M. Houston , Andrew P. V. Siemion , Steve Croft

The modern search for extraterrestrial intelligence (SETI) began with the seminal publications of Cocconi & Morrison (1959) and Schwartz & Townes (1961), who proposed to search for narrow-band signals in the radio spectrum, and for optical…

Instrumentation and Methods for Astrophysics · Physics 2021-07-27 Michael Hippke

We applied the Koch snowflake fractal antenna in planning calibration of the Five-hundred-meter Aperture Spherical radio Telescope (FAST), hypothesizing second-order fractal primary reflectors can optimize the orientated sensitivity of the…

Instrumentation and Methods for Astrophysics · Physics 2021-07-15 Yi-Xuan Chen , Wen-Fei Liu , Zhi-Song Zhang , Tong-Jie Zhang

We report a novel radio autocorrelation (AC) search for extraterrestrial intelligence (SETI). For selected frequencies across the terrestrial microwave window (1-10 GHz) observations were conducted at the Allen Telescope Array to identify…

SETI is not a usual point of departure for environmental humanities. However, this paper argues that theories originating in this field have direct implications for how we think about viable inhabitation of the Earth. To demonstrate SETI's…

Physics and Society · Physics 2025-01-14 Lukáš Likavčan

The transmission of news stories in global culture has changed fundamentally in the last three decades. The general public are alerted to breaking stories on increasingly rapid timescales, and the discussion/distortion of facts by writers,…

Physics and Society · Physics 2016-06-22 Duncan Forgan , Alexander Scholz

The lack of evidence for the existence of extraterrestrial life, even the simplest forms of animal life, makes it is difficult to decide whether the search for extraterrestrial intelligence (SETI) is more a high-risk, high-payoff endeavor…

Popular Physics · Physics 2017-04-14 Claudio Grimaldi

The radio Search for Extra Terrestrial Intelligence (SETI) aims at identifying intelligent and communicative civilizations in the Universe through the detection of engineered transmissions. In the absence of prior knowledge concerning the…

Signal Processing · Electrical Eng. & Systems 2018-09-12 Gregory Hellbourg , Andrew Xu

Temporal explanations to the Fermi paradox state that the vast scale of the galaxy diminishes the chances of establishing contact with an extraterrestrial technological civilization (ETC) within a certain time window. This argument is…

Popular Physics · Physics 2009-07-17 Carlos Cotta , Álvaro Morales

The Fermi paradox is the discrepancy between the strong likelihood of alien intelligent life emerging (under a wide variety of assumptions) and the absence of any visible evidence for such emergence. We use this intriguing unlikeness to…

High Energy Astrophysical Phenomena · Physics 2019-08-06 Luis A. Anchordoqui , Susanna M. Weber , Jorge F. Soriano

The Panoramic SETI (Search for Extraterrestrial Intelligence) experiment (PANOSETI) aims to detect and quantify optical transients from nanosecond to second precision over a large field-of-view ($\sim$4,450 square-degrees). To meet these…

Instrumentation and Methods for Astrophysics · Physics 2021-11-23 J. Maire , S. A. Wright , D. Werthimer , F. P. Antonio , A. Brown , P. Horowitz , R. Lee , W. Liu , R. Raffanti , J. Wiley , M. Cosens , C. M. Heffner , A. W. Howard , R. P. S. Stone , R. R. Treffers

It has been widely acknowledged that self-replicating space-probes (SRPs) could explore the galaxy very quickly relative to the age of the galaxy. An obvious implication is that SRPs produced by extraterrestrial civilizations should have…

Popular Physics · Physics 2011-11-29 Keith B. Wiley

Over a period of several decades a concerted effort has been made to determine whether intelligent life exists outside of our solar system, known as the Search for Extraterrestrial Intelligence or SETI. This has been based primarily upon…

General Physics · Physics 2007-05-23 Fred H. Thaheld

A major aspect of the search for extraterrestrial intelligence (SETI) involves searching for electromagnetic transmissions from extraterrestrial sources, often using our own transmissions as a guide. Previous studies have suggested that…

Instrumentation and Methods for Astrophysics · Physics 2025-08-22 Pinchen Fan , Jason T. Wright , T. Joseph W. Lazio

The Five-hundred-meter Aperture Spherical Telescope (FAST) is the world's largest single-dish radio telescope, and the search for extraterrestrial intelligence (SETI) is one of its five key science objectives. We conducted a targeted…

Instrumentation and Methods for Astrophysics · Physics 2025-09-09 Guang-Yuan Song , Zhen-Zhao Tao , Bo-Lun Huang , Yan Cui , Bo Yu , Tong-Jie Zhang

The search for extraterrestrial intelligence (SETI) targeted searches aim to observe specific areas and objects to find possible technosignatures. Many SETI researches have focused on nearby stars and their planets in recent years. In this…

Instrumentation and Methods for Astrophysics · Physics 2025-04-10 Xiao-Hang Luan , Bo-Lun Huang , Zhen-Zhao Tao , Yan Cui , Tong-Jie Zhang , Pei Wang

In SETI, when searching for "beacons" -- transmissions intended for us and meant to get our attention -- one must guess the appropriate frequency to search by considering what frequencies would be universally obvious to other species. This…

Instrumentation and Methods for Astrophysics · Physics 2023-06-22 Jason T. Wright

The search for extraterrestrial intelligence (SETI) is a scientific endeavor which struggles with unique issues -- a strong indeterminacy in what data to look for and when to do so. This has led to attempts at finding both fundamental…

Information Theory · Computer Science 2021-07-22 Ian George , Xinan Chen , Lav R. Varshney

What is the meaning of the Fermi Paradox -- are we alone or is starfaring rare? Can general relativity be united with quantum mechanics? The searches for answers to these questions could intersect. It is known that an accelerator capable of…

High Energy Astrophysical Phenomena · Physics 2015-03-06 Brian C. Lacki

SETI@home is a radio Search for Extraterrestrial Intelligence (SETI) project, looking for technosignatures in data recorded at multiple observatories from 1998 to 2020. Most radio SETI projects analyze data using dedicated processing…

Instrumentation and Methods for Astrophysics · Physics 2025-07-25 Eric J. Korpela , David P. Anderson , Jeff Cobb , Matt Lebofsky , Wei Liu , Dan Werthimer