The Milky Way feasted on a smaller galaxy 10 billion years ago

The doomed galaxy’s stars still roam the sky, moving in the opposite direction of other stars

Milky Way illustration

GOBBLE GOBBLE  The young Milky Way, shown in an artist’s impression, swallowed a smaller galaxy about 10 billion years ago. The smaller galaxy’s stars are shown with yellow arrows depicting their direction of motion.

ESA (artist’s impression and composition); H.H. Koppelman, A. Villalobos and A. Helmi (simulation); Hubble/ESA/NASA (galaxy image), CC BY-SA 3.0 IGO

This article is only available to Science News subscribers.

Subscribers, enter your e-mail address to access our archives.

Not a subscriber?

Science News is a nonprofit.

Support us by subscribing now.

More Stories from Science News on Astronomy

From the Nature Index

Paid Content