Colossal ‘Fossil’ Structures Have Been Detected Lurking on The Outskirts of Our Galaxy
From Earth’s vantage point in one of the Milky Way’s spiral arms, the structure of our galaxy is pretty difficult to reconstruct. That’s because gauging the distance to something in space when you don’t know its intrinsic brightness is really, really hard. And there are a lot of objects in the Milky Way whose brightness … Read more