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What is astrometry used for?

Answer 1

Astrometry is a branch of astronomy that is used to take precise measurements and positions of celestial bodies.

Astrometric measurements yield information on the kinematics and physical origin of the Solar System and our galaxy, the Milky Way, contributing to our growing understanding of the universe.

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Answer 2

Parker Albertson

Astrometry is the exact measurement of the positions, distances, and motions of celestial objects, including planets, stars, and galaxies. It is useful for understanding the dynamics and structure of the universe, finding exoplanets, observing star motion, and figuring out asteroids' and comets' orbits.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.