How A Catastrophic Cosmic Collision Changed the Milky Way Forever

Our galaxy, perhaps like many in the universe, is a bit of a Frankenstein's monster. A new study makes a compelling case that a central structure in the Milky Way is actually composed mostly of stars born in another galaxy, brought to us by a long-ago galactic smash-up.10 billion years ago, our own galaxy collided with a smaller dwarf galaxy in a crash so intense that it ripped the smaller body apart and forever changed the structure of the Milky Way.
Blended Family
The Milky Way has a