NASA's Hubble Data Shows Star Formation in Andromeda Galaxy Declining for 500 Million Years

Summary

A new study using data from NASA's Hubble Space Telescope reveals that star formation in the Andromeda galaxy has been declining for 500 million years, with a significant drop in the last 40 million years. Researchers combined data from two Hubble surveys to measure approximately 200 million individual stars, providing a detailed history of the galaxy's activity.