Topic description and stories

Gaia view of Omega Centauri

Latest Gaia data release reveals rare lenses, cluster cores and unforeseen science

10 Oct 2023

The European Space Agency’s Gaia mission has released a goldmine of knowledge about our galaxy and beyond. Among other findings, the star surveyor...

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Astronomers observe light bending around an isolated white dwarf

02 Feb 2023

Astronomers have directly measured the mass of a dead star using an effect known as gravitational microlensing, first predicted by Einstein in his...

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Largest chemical map of the Milky Way unveiled

13 Jun 2022

The European Space Agency’s (ESA) Gaia mission has released a new treasure trove of data about our home galaxy, including stellar DNA, asymmetric...

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The colour of the sky from Gaia’s Early Data Release 3

Gaia: scientists take a step closer to revealing origins of our galaxy

03 Dec 2020

An international team of astronomers, led by the University of Cambridge, announced the most detailed ever catalogue of the stars in a huge swathe of...

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Gaia spots a ‘ghost’ galaxy next door

13 Nov 2018

The Gaia satellite has spotted an enormous ‘ghost’ galaxy lurking on the outskirts of the Milky Way.

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Artist's impression of a collision between the Milky Way and a massive dwarf

The Gaia Sausage: the major collision that changed the Milky Way

04 Jul 2018

An international team of astronomers has discovered an ancient and dramatic head-on collision between the Milky Way and a smaller object, dubbed ‘the...

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Gaia’s first sky map

Gaia results revealed – first data release from the most detailed map ever made of the sky

14 Sep 2016

The first results from the Gaia satellite, which is completing an unprecedented census of more than one billion stars in the Milky Way, are being...

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Two ‘twin’ stars with identical spectra observed by the La Silla Telescope. Since it is known that one star is 40 parsecs away, the difference in their apparent brightnesses allows calculation of the second star’s distance

Using stellar ‘twins’ to reach the outer limits of the galaxy

04 Sep 2015

A new method of measuring the distances between stars enables astronomers to climb the ‘cosmic ladder’ and understand the processes at work in the...

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Artist’s impression of Gaia14aae

One year and 272 billion measurements later, Gaia team celebrates first anniversary of observations

25 Aug 2015

A space mission to create the largest, most-accurate, three-dimensional map of the Milky Way is celebrating its first completed year of observations...

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Artist’s impression of Gaia14aae

Gaia satellite and amateur astronomers spot one in a billion star

17 Jul 2015

The Gaia satellite has discovered a unique binary system where one star is ‘eating’ the other, but neither star has any hydrogen, the most common...

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An artist’s impression of a Type Ia supernova – the explosion of a white dwarf locked in a binary system with a companion star.

Gaia discovers its first supernova

12 Sep 2014

While scanning the sky to measure the positions and movements of stars in our Galaxy, Gaia has discovered its first stellar explosion in another...

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The first standardised way to measure stars has been developed for Gaia mission

Spectral ‘ruler’ is first standardised way to measure stars

24 Jun 2014

A team of astronomers have created the first standardised set of measurement guidelines for analysing and cataloguing stars.

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