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Space astrometry
DOI: 10.1080/00107514.2023.2275871
Bibcode: 2023ConPh..64...65P
Perryman, Michael
Astrometry, the measurement of accurate star positions and motions, was first carried out from space by the European Space Agency's Hipparcos mission in the 1990s. Today, it is undergoing a particularly dramatic advance with ESA's ongoing Gaia mission, launched in 2013. I explain why star positions are of such importance in astronomy, and outline …
2023
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Contemporary Physics
Hipparcos
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