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BYA
(redirected from Billion years ago)

    Also found in: Wikipedia 0.04 sec.
AcronymDefinition
BYABecause You Asked
BYABillion Years Ago
BYABerkeley Youth Alternatives
BYABrigham Young Academy (1892 to 1904; Church of Latter-Day Saints)


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? References in periodicals archive
The distribution of materials in this composite image of the Nili Fossae region of Mars tells scientists that water resided there no more recently than nearly 4 billion years ago.
Craft reveals Martian site of ancient water by Cowen, R. / Science News
6 billion years ago, when the solar system was just taking shape.
Cosmic clues by Scholl, Elizabeth / Science World
85 billion years ago causing a crater 250 kilometres in diametre.
Sudbury rocks focus of deep drill project by Northern Ontario Business
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