Results 71 to 80 of about 11,825 (205)

Time Markers for SETI in Binary Systems: History and Prospects

Astronomy
Contemporary surveys in the search for extraterrestrial intelligence (SETI) typically make one-off “spot scans” across the sky to search planetary systems for narrow-band radio signals that would indicate the presence of intelligent life.
Jacob Haqq-Misra
doaj   +1 more source

A TESS Test of the Hybrid Ring Strategy for Technosignature Searches Using GRB 221009A

The Astrophysical Journal
We present the first observational test of the hybrid ring strategy, a general coordinated signaling scheme proposed by N. Seto, which provides a practical Schelling point realization for interstellar signaling.
Naoki Seto
doaj   +1 more source

The SETI observational plan [PDF]

The SETI (Search for Extraterrestrial Intelligence) Project's primary thrust is to search the microwave region of the spectrum for signals of extraterrestrial intelligent origin.
Berman, A. L.
core   +1 more source

A philosophical outlook on potential conflicts between planetary protection, astrobiology and commercial use of space [PDF]

, 2019
The aim of this chapter is to use philosophy and, in particular ethical theory, to identify and explore some potential ...
Persson, Erik
core  

Hybrid Strategy for Coordinated Interstellar Signaling: Linking the Galactic Center and Extragalactic Bursts

The Astrophysical Journal
The search for extraterrestrial intelligence (SETI) is largely limited by the vastness of the signaling parameter space. The concurrent signaling scheme offers a framework in which civilizations can coordinate their transmission and reception by ...
Naoki Seto
doaj   +1 more source

Second Symposium on Chemical Evolution and the Origin of Life [PDF]

Recent findings by NASA Exobiology investigators are reported. Scientific papers are presented in the following areas: cosmic evolution of biogenic compounds, prebiotic evolution (planetary and molecular), early evolution of life (biological and ...
Devincenzi, D. L., model.
core   +1 more source

Solar Hegemony: M Dwarfs Are Unlikely to Host Observers Such As Ourselves

The Astronomical Journal
With no firm evidence for life beyond our solar system, inferences about the population of observers such as ourselves rest upon the Earth as a single input, at least for now.
David Kipping
doaj   +1 more source

Interstellar Communication: The Case for Spread Spectrum

, 2011
Spread spectrum, widely employed in modern digital wireless terrestrial radio systems, chooses a signal with a noise-like character and much higher bandwidth than necessary.
Messerschmitt, David G.
core   +1 more source

Robot Consciousness: Physics and Metaphysics Here and Abroad [PDF]

Interest has been renewed in the study of consciousness, both theoretical and applied, following developments in 20th and early 21st-century logic, metamathematics, computer science, and the brain sciences.
Ripley, Stephen
core  

The question "Are We Alone?" in different cultures

, 2009
A survey of the worldwide litterature reveals that the question "Are We Alone in the Universe?" has been formulated only in the western litterature. Here I try to understand why it is so.
Schneider, Jean
core   +3 more sources