Abstract The European AstRoMap project (supported by the European Commission Seventh
Framework Programme) surveyed the state of the art of astrobiology in Europe and beyond …

New and unique opportunities now exist to look for technosignatures (TS) beyond traditional
SETI radio searches, motivated by tremendous advances in exoplanet science and …

We study the variation of the spectrum of the Fermi Bubbles with Galactic latitude. Far from
the Galactic plane (| b|≳ 30°), the observed gamma-ray emission is nearly invariant with …

Breakthrough Listen (BL) is a 10 year initiative to search for signatures of technologically
capable life beyond Earth via radio and optical observations of the local universe. A core …

Many articulations of the Fermi Paradox have as a premise, implicitly or explicitly, that
humanity has searched for signs of extraterrestrial radio transmissions and concluded that …

Astrobiology is the study of the origin, evolution, distribution, and future of life in the universe.
It is an inherently interdisciplinary field that encompasses astronomy, biology, geology …

We examine the possibility that fast radio bursts (FRBs) originate from the activity of
extragalactic civilizations. Our analysis shows that beams used for powering large light sails …

I review the origins and development of the idea of Dyson spheres, their purpose, their
engineering, and their detectability. I explicate the ways in which the popular imagining of …

Dyson spheres are hypothetical megastructures built by advanced extraterrestrial
civilizations to harvest radiation energy from stars. Here, we combine optical data from Gaia …

The search for extraterrestrial intelligence is currently being pursued using multiple
techniques and in different wavelength bands. Dyson spheres, megastructures that could be …