Results 101 to 110 of about 9,504 (208)

Starry Messages: Searching for Signatures of Interstellar Archaeology

, 2009
Searching for signatures of cosmic-scale archaeological artifacts such as Dyson spheres or Kardashev civilizations is an interesting alternative to conventional SETI.
Carrigan Jr, Richard A.
core  

Uncertainty in estimates of the number of extraterrestrial civilizations [PDF]

An estimation of the number N of communicative civilizations is made by means of Drake's formula which involves the combination of several quantities, each of which is to some extent uncertain.
Sturrock, P. A.
core   +1 more source

Projections of Earth’s Technosphere: Strategies for Observing Technosignatures on Terrestrial Exoplanets

The Astrophysical Journal Letters
The search for technosignatures—remotely detectable evidence of extraterrestrial technology—draws upon examples from the recent history of Earth as well as projections of Earth’s technosphere.
Jacob Haqq-Misra, Ravi K. Kopparapu, George Profitiliotis   +2 more
doaj   +1 more source

Making Outer Space Legal: The “Appearance” of Extraterrestrial Intelligence at the Dawn of the Space Age

Histories
This paper addresses the knowledge gap on the beginning of the history of contact with extraterrestrial intelligent beings in international astronautics. In the mid-1950s, the world’s space law practitioner, Andrew G.
Gabriela Radulescu
doaj   +1 more source

Deep space network energy program [PDF]

If the Deep Space Network is to exist in a cost effective and reliable manner in the next decade, the problems presented by international energy cost increases and energy availability must be addressed.
Friesema, S. E.
core   +1 more source

Searching the SN 1987A SETI Ellipsoid with TESS

The Astronomical Journal
The SETI Ellipsoid is a strategy for technosignature candidate selection that assumes that extraterrestrial civilizations who have observed a galactic-scale event—such as supernova 1987A—may use it as a Schelling point to broadcast synchronized signals ...
Bárbara Cabrales, James R. A. Davenport, Sofia Sheikh, Steve Croft, Andrew P. V. Siemion, Daniel Giles, Ann Marie Cody   +6 more
doaj   +1 more source

Technical considerations on using the large Nancay radio telescope for SETI [PDF]

The Nancay decimetric Radio Telescope (NRT) in Nancay, France, is described, and its potential use for Search for Extraterrestrial Intelligence (SETI) observations is discussed.
Biraud, F., Gulkis, S., Heidmann, J., Tarter, J.   +3 more
core   +1 more source

Anomaly Detection and Radio-frequency Interference Classification with Unsupervised Learning in Narrowband Radio Technosignature Searches

The Astronomical Journal
The search for radio technosignatures is an anomaly detection problem: Candidate signals represent needles of interest in the proverbial haystack of radio-frequency interference (RFI). Current search frameworks find an enormity of false-positive signals,
Ben Jacobson-Bell, Steve Croft, Carmen Choza, Alex Andersson, Daniel Bautista, Vishal Gajjar, Matthew Lebofsky, David H. E. MacMahon, Caleb Painter, Andrew P. V. Siemion   +9 more
doaj   +1 more source

Artificial intelligence hallucinations. [PDF]

Crit Care, 2023
Salvagno M, Taccone FS, Gerli AG.
europepmc   +1 more source

A Comparative Study of Methods for Detecting Extraterrestrial Life in Exploration Missions to Mars and the Solar System II: Targeted Characteristics, Detection Techniques, and Their Combination for Survey, Detection, and Analysis. [PDF]

Astrobiology, 2023
Enya K, Yamagishi A, Kobayashi K, Yoshimura Y, Tasker EJ.   +4 more
europepmc   +1 more source