ORB means Observatoire Royal de Belgique Royal Observatory of Belgium in Astronomy
Similar to ORB
AAS - American Astronautical SocietyAAS - Archaeology, Astronautics, and Seti
AAT - Anglo Australian Telescope
AAVSO - American Association of Variable Star Observers
ABB - After the Big Bang
ABBA - ADC Backend For Bolometer Array
ABF - Astronomische Beeldverwerkings Faciliteiten
View all in Astronomy