Hubble Observes Decline in Star Formation in Andromeda Galaxy

WHO:

Phys.org - NASA's Hubble Space Telescope is involved in the study of the Andromeda galaxy.

WHAT:

Phys.org - Star formation in the Andromeda galaxy has undergone a 500-million-year decline.

NASA - The decline in star formation has been particularly steep in the last 40 million years.

WHERE:

Phys.org - The Andromeda galaxy is located about 2.5 million light-years from Earth.

WHEN:

Phys.org - The study indicates a decline in star formation over the past 500 million years, with a notable drop in the last 40 million years.

WHY:

Phys.org - The study aims to provide a better understanding of the past of galaxies like our own Milky Way.

HOW:

Phys.org - Data from NASA's Hubble Space Telescope was used to examine the stellar populations in the Andromeda galaxy.

(UPDATED July 27, 2026 22:25 UTC)

NASA's Hubble Space Telescope is currently studying the Andromeda galaxy, which is located about 2.5 million light-years from Earth. The research reveals that star formation in Andromeda has experienced a significant decline over the past 500 million years, with a particularly steep drop occurring in the last 40 million years. This study aims to enhance our understanding of the history of galaxies similar to our own Milky Way by examining the stellar populations in Andromeda.