Mark McCaughrean on Nostr: The range science enabled by Gaia is huge, including using distant quasars to provide ...

The range science enabled by Gaia is huge, including using distant quasars to provide a fundamental reference frame & to measure the tiny acceleration of the Sun in its ~250 million year orbit around the Milky Way.

https://www.cosmos.esa.int/web/gaia/edr3-acceleration-solar-system

Another huge treasure trove will be the discovery of many new planets, betrayed by slight wobbles in the motions of their parent stars across the sky. Some have already been found, but many more will come in future Gaia catalogues.

https://www.cosmos.esa.int/web/gaia/exoplanets