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Updated: 2 hours 45 min ago

Gaia untangles the starry strings of the Milky Way

Wed, 2019-08-28 08:00

Rather than leaving home young, as expected, stellar ‘siblings’ prefer to stick together in long-lasting, string-like groups, finds a new study of data from ESA’s Gaia spacecraft.

Astronomers spy Europa blocking distant star – thanks to Gaia

Thu, 2019-07-25 08:00

On 31 March 2017, Jupiter’s moon Europa passed in front of a background star – a rare event that was captured for the first time by ground-based telescopes thanks to data provided by ESA’s Gaia spacecraft.

Gaia starts mapping our galaxy’s bar

Tue, 2019-07-16 13:00

The first direct measurement of the bar-shaped collection of stars at the centre of our Milky Way galaxy has been made by combining data from ESA’s Gaia mission with complementary observations from ground- and space-based telescopes.

Gaia’s biggest operation since launch and commissioning

Mon, 2019-07-15 14:00

On Tuesday 16 July, teams at ESA’s mission control will perform an ‘orbit change manoeuvre’ on the Gaia space observatory – the biggest operation since the spacecraft was launched in 2013.

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.

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