QSO means Quasi-Stellar Object in Astronomy
Similar to QSO
ASAS - All Sky Automated SurveyASCH - Alien Societies Culture And History
ASLV - Advanced Satellite Launch Vehicle
AST - Apparent Solar Time
ASWG - Astronomical Science Working Group
ASWG - ATST Advanced Technology Solar Telescope Science Working Group
ATM - Apollo Telescope Mount
View all in Astronomy