A 12.5-Billion-Year-Old Fossil Is Hiding Inside the Milky Way

Terzan 5 is a surviving fragment of the Milky Way's birth, dating back 12.5 billion years.

Webb and Hubble found four separate generations of stars inside it, not one.

It's only the second known 'bulge fossil fragment', after Liller 1.

The clump never merged into the galaxy's core, so it preserves a chemical diary of supernovae.

Star births dated to 12.5, 4.7, 3.8 and 2.5 billion years ago.

Read the full story on GeneralNews Read full article →