40 quintillion stellar-mass black holes are lurking in the universe, new study finds

Scientists have estimated the number of “small” black holes in the universe. And no surprise: It’s a lot. This number might seem impossible to calculate; after all, spotting black holes is not exactly the simplest task. Because they’re are as pitch-black as the space they lurk in, the light swallowing cosmic goliaths can be detected … Read more

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