English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

If a subset of advanced civilizations in the universe choose to rapidlyexpand into unoccupied space, these civilizations would have the opportunity togrow to a cosmological scale over the course of billions of years. If such lifealso makes observable changes to the galaxies they inhabit, then it is possiblethat vast domains of life-saturated galaxies could be visible from the Earth.Here, we describe the shape and angular size of these domains as viewed fromthe Earth, and calculate median visible sizes for a variety of scenarios. Wealso calculate the total fraction of the sky that should be covered by at leastone domain. In each of the 27 scenarios we examine, the median angular size ofthe nearest domain is within an order of magnitude of a percent of the wholecelestial sphere. Observing such a domain would likely require an analysis ofgalaxies on the order of a Gly from the Earth.

On the visible size and geometry of aggressively expanding civilizations at cosmological distances