Spherical data types for PostgreSQL

 PgSphere, an extension for PostgreSQL, aims at providing uniform
 access to spherical data. It allows for a fast search and analysis for
 objects with spherical attributes in geographical, astronomical, or
 other applications using PostgreSQL.
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 By using an SQL interface, PgSphere's users can conveniently manage
 data of geographical objects around the world and astronomical data
 collections like star and other catalogues.