Is M51-ULS-1b the First Planet Found Outside the Galaxy?

The Cosmic Companion
Oct 29 · 7 min read

Could M51-ULS-1b be the first world found outside the Milky Way galaxy? We examine the evidence for what could be a historic discovery.

The Whirlpool Galaxy, seen here, may be home to the first extroplanet ever discovered. Image credit: The Cosmic Companion

Scattered throughout our local neighborhood of the Milky Way Galaxy, more than 4,500 exoplanets orbit their stars, cataloged in the tomes of worlds known to the astronomers of Earth. Nearly all exoplanets known to science are found…