| • Satellite is now just over half-way through its five-year mission and the first batch of data has been released |
• The one billion stars it has located are still only one per cent of the Milky Way's estimated stellar population
• In the future Gaia will collect data about each star's temperature, luminosity and chemical composition
Esa has unveiled a stunning 3D map of a billion stars in our galaxy that is 1,000 times more complete than anything that previously existed.
The data for the map was collected by a space-based probe called Gaia, which has been circling the sun nearly a million miles beyond Earth's orbit since its launch in December 2013.
On its journey, the satellite has been discreetly snapping pictures of the Milky Way.
Now the European Space Agency has released the first batch of data collected by Gaia, which includes information on the brightness and position of over a billion stars. ...
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