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Taking the Galactic Census

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ESA Gaia
Updated: 34 min 36 sec ago

Asteroids old and new

Fri, 2019-06-28 08:00

A visualisation of the orbits of asteroids observed by ESA’s Gaia satellite, including four recent discoveries

Observing Gaia from Earth to improve its star maps

Thu, 2019-05-02 13:00

While ESA’s Gaia mission has been surveying more than one billion stars from space, astronomers have been regularly monitoring the satellite’s position in the sky with telescopes across the world, including the European Southern Observatory in Chile, to further refine Gaia’s orbit and ultimately improve the accuracy of its stellar census.

Gaia’s new asteroids

Mon, 2019-04-29 12:40

Space Science Image of the Week: While charting the stars, Gaia also observes asteroids and occasionally spots new ones

Weighing the Milky Way

Thu, 2019-03-07 16:24

Measurements from Hubble and Gaia improve our estimate of the mass of our Galaxy: 1.5 trillion solar masses

Gaia clocks new speeds for Milky Way-Andromeda collision

Thu, 2019-02-07 15:00

ESA’s Gaia satellite has looked beyond our Galaxy and explored two nearby galaxies to reveal the stellar motions within them and how they will one day interact and collide with the Milky Way – with surprising results.

Gaia reveals how Sun-like stars turn solid after their demise

Wed, 2019-01-09 18:00

Data captured by ESA’s galaxy-mapping spacecraft Gaia has revealed for the first time how white dwarfs, the dead remnants of stars like our Sun, turn into solid spheres as the hot gas inside them cools down.

The Universe of Gaia

Thu, 2018-12-13 15:38

A taste of the exciting science that is being performed using data from ESA’s Gaia star surveyor, delving into the formation history of our Milky Way

Galactic ghosts: Gaia uncovers major event in the formation of the Milky Way

Wed, 2018-10-31 18:00

ESA’s Gaia mission has made a major breakthrough in unravelling the formation history of the Milky Way. 

Gaia spots stars flying between galaxies

Tue, 2018-10-02 09:00

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 home

Tue, 2018-09-25 17:00

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 life

Wed, 2018-09-19 17:00

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 Gaia

Mon, 2018-08-20 15:00

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.

Stellar family portrait

Mon, 2018-05-14 14:00

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

Galactic fingerprint

Mon, 2018-04-30 08:55

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

Replay Gaia Data Release

Wed, 2018-04-25 11:00

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

Gaia creates richest star map of our Galaxy – and beyond

Wed, 2018-04-25 10:00

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.

Watch Gaia Data Release

Tue, 2018-04-24 08:20

Gaia’s new star catalogue will be unveiled tomorrow. Watch the media briefing live from ILA at 09:00 GMT/11:00 CEST

Waiting for Gaia

Mon, 2018-04-23 15:00

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

Call for media: Second data release from ESA's Gaia mission

Thu, 2018-04-19 06:00

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.

Hidden cluster revealed

Mon, 2018-01-29 15:30

Space Science Image of the Week: Next to the brightest star in the night sky lies a cluster of stars discovered by ESA’s Gaia satellite