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астрометрия

The branch of astronomy that deals with measuring the positions of celestial objects, especially stars. Astrometrists measure parallaxes and proper motions, which allow astronomers to determine the distances and velocities of the stars.

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Industry/Domain: Holiday Category: Festivals

Ақымақтар күні

Celebrated on the 1st of April each year, April Fools' Day is a time when people, and increasingly businesses, play all kinds of good humored or funny ...