Gaia has charted the cosmos since 2014, creating a vast encyclopedia of the positions and movements of celestial objects in our Milky Way and beyond. It is difficult to capture the breadth of ...

Why it's so special: The Milky Way often appears as a reddish, pinkish and bluish-white arc across the night sky, but this new super-long exposure image from South Africa's ground-based MeerKAT ...

Shapley determined that the Milky Way was 300,000 light years across ... his discovery because he had access to this state-of-the-art technology.” The Hooker telescope was the brainchild ...