astrometry

Example Sentences

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But astrometry can reveal planets, too: A planet orbiting a star can cause the star’s position to cyclically shift ever-so-slightly, oscillating back and forth in the plane of the sky.

From Scientific American

"We show that the existence of the planet can be ascertained, and its true mass can be determined with high accuracy, by combining Gaia astrometry and radial velocities."

From Fox News

Measuring these shifts, or parallaxes, lets astronomers calculate the stars’ actual positions and movements through the galaxy with great precision, a field of study called astrometry that Gaia and its predecessor Hipparcos have revitalized.

From National Geographic

The astrometry data collected by Gaia will augment scientific observations made by powerful ground-based telescopes.

From Forbes

It will be engaged in what is termed astrometry - the science of mapping the locations and movements of celestial objects.

From BBC