411 REFERENCE · Wiktionary
Alderson disk
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Alternative forms
en Alderson disc
Etymology
en American programmer Dan Alderson =, who invented the concept.
Noun
A hypothetical megastructure in the form of a disk with a star located in a hole running through its axis, and massive enough to have its own atmosphere
Hypernyms
en megastructure
Coordinate terms
en Dyson sphere
en Niven ring
en Megastructures