Apr 26, 2018
Gaia maps the Milky Way to the tune of 1.7 billion stars
Posted by Genevieve Klien in category: space travel
The European Space Agency (ESA) has taken a “galactic census” of the Milky Way, unveiling the second major data release from the Gaia mission. Along with some stars further afield, the data release provides the most detailed map of our home galaxy, which includes position, distance and motion data of nearly 1.7 billion stars, as well as the orbits and positions of thousands of asteroids.
The Gaia spacecraft began scanning the sky in 2014, and in September 2016 the first data release was published based on 14 months of observations. It contained position and brightness data of 1.1 billion stars, as well as the distance and motion data of two million of those stars.
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