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Terrestrial Time replaced Ephemeris Time, ET
in Astronomy
Transit Traverse
in Astronomy
171077171076
Similar to TT
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
AC - Ascendant Cusp
AC - Active Coronae
View all in Astronomy