Starstruck: A collage of four different Gaia maps: the speed at which stars move towards or away from us (top left); 3D motions of stars (bottom left); interstellar dust (top right); and star ...
In 2013, the European Space Agency launched the Gaia astronomical observatory. Its mission: Map the positions and motions of a billion stars in our galaxy. Yes, a billion. They recently released a ...
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