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ESA > Our Activities > Space Science > Gaia

Stellar family portrait

Explore Gaia’s second data release with this interactive visualisation of the Hertzsprung-Russell diagram, the family portrait of stars in our Milky Way

Gaia data galore

Gaia has published its much awaited second data release, with high precision measurements of nearly 1.7 billion stars

Galactic fingerprint

Space Science Image of the Week: Gaia fingerprints the stars and monitors their motion through the Universe

Replay Gaia Data Release

Gaia’s new star catalogue has been unveiled. Watch a replay of the media briefing from ILA.

Waiting for Gaia

Find out why scientists worldwide are excited about Gaia's new data and how it's going to impact all things astronomy

Gaia’s first sky map

ESA’s Gaia mission has published its first catalogue of a billion stars

Latest News

Galactic ghosts: Gaia uncovers major event in the formation of the Milky Way31 October 2018

Galactic ghosts: Gaia uncovers major event in the formation of the Milky Way31 October 2018 ESA’s Gaia mission has made a major breakthrough in unravelling the formation history of the Milky Way.

Gaia spots stars flying between galaxies02 October 2018

Gaia spots stars flying between galaxies02 October 2018 A team of astronomers using the latest set of data from ESA’s Gaia mission to look for high-velocity stars being kicked out of the Milky Way were surprised to find stars instead sprinting inwards – perhaps from another galaxy.

Gaia finds candidates for interstellar ‘Oumuamua’s home25 September 2018

Gaia finds candidates for interstellar ‘Oumuamua’s home25 September 2018 Using data from ESA’s Gaia stellar surveyor, astronomers have identified four stars that are possible places of origin of ‘Oumuamua, an interstellar object spotted during a brief visit to our Solar System in 2017.

Gaia hints at our Galaxy’s turbulent life19 September 2018

Gaia hints at our Galaxy’s turbulent life19 September 2018 ESA’s star mapping mission, Gaia, has shown our Milky Way galaxy is still enduring the effects of a near collision that set millions of stars moving like ripples on a pond.

Infant exoplanet weighed by Hipparcos and Gaia20 August 2018

Infant exoplanet weighed by Hipparcos and Gaia20 August 2018 The mass of a very young exoplanet has been revealed for the first time using data from ESA’s star mapping spacecraft Gaia and its predecessor, the quarter-century retired Hipparcos satellite.

Gaia creates richest star map of our Galaxy – and beyond25 April 2018

Gaia creates richest star map of our Galaxy – and beyond25 April 2018 ESA’s Gaia mission has produced the richest star catalogue to date, including high-precision measurements of nearly 1.7 billion stars and revealing previously unseen details of our home Galaxy.

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