SETI in 2020

Abstract

In the spirit of Trimble's "Astrophysics in XXXX" series, I very briefly and subjectively review developments in SETI in 2020. My primary focus is 74 papers and books published or made public in 2020, which I sort into six broad categories: results from actual searches, new search methods and instrumentation, target and frequency seleciton, the development of technosignatures, theory of ETIs, and social aspects of SETI.

SETI in 2021

“…1. INTRODUCTION This is the second installment of the SETI in 20xx a series, begun by Wright (2021a), providing a review of papers in SETI from the previous year. This series is inspired by the "ApXX" annual reviews of all of astrophysics by Virginia Trimble (e.g.…”