GJ

GJ is a Sigle which means

Gliese Jahreiss , Catalog of stars close to the Solar system

GJ can also be employed like measuring unit of energy. Gigajoule of its true name means 1.000 MJ (10^9 Joule S).

Random links:

ABC (newspaper) | Menidia | Saint-Didier-on-Arroux | First search of the historical Jesus | Fountain of Janus | Zongzi