Technique · Astrometry & Motion

Space Astrometry

Measuring stellar positions, distances, and motions from space at extraordinary precision. ESA's Hipparcos and then Gaia have charted more than a billion stars, transforming our three-dimensional map of the galaxy.

Astrometry & MotionMeasures: Precise positions of a billion stars

Highlights

›Gaia has mapped over a billion stars in 3-D

Gaia

Knowledge connections

Member of groupAstrometry & Motion
Associated withGaia
Associated withThe International Celestial Reference Frame (ICRF3)
Associated withPlate Solving

Sources

Facts on this topic will be cited from these primary and reference sources.

ESAEuropean Space Agency
European missions, observatories, and space science imagery.
NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.

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Space Astrometry

Highlights

Builds on

Knowledge connections

Sources

Space Astrometry

Highlights

Builds on

Knowledge connections

Sources