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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

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.

Call for media: Second data release from ESA's Gaia mission19 April 2018

Call for media: Second data release from ESA's Gaia mission19 April 2018 Media representatives are invited to a briefing on the second data release of ESA's Gaia mission, an astrometry mission to map more than one billion stars in our Galaxy, the Milky Way.

Close encounters of the stellar kind31 August 2017

Close encounters of the stellar kind31 August 2017 The movements of more than 300 000 stars surveyed by ESA’s Gaia satellite reveal that rare close encounters with our Sun might disturb the cloud of comets at the far reaches of our Solar System, sending some towards Earth in the distant future.

Artificial brain helps Gaia catch speeding stars26 June 2017

Artificial brain helps Gaia catch speeding stars26 June 2017 With the help of software that mimics a human brain, ESA’s Gaia satellite spotted six stars zipping at high speed from the centre of our Galaxy to its outskirts. This could provide key information about some of the most obscure regions of the Milky Wa...

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