Discover
Discover

Share
News
/
Article

Galaxy’s ‘cannibalism’ revealed

SEP 08, 2009

DOI: 10.1063/PT.5.023662

Physics Today
BBC News : The vast Andromeda galaxy appears to have expanded by digesting stars from other galaxies, research has shown.When an international team of scientists mapped Andromeda, they discovered stars that they said were “remnants of dwarf galaxies."The astronomers report their findings in the journal Nature . Related Link The remnants of galaxy formation from a panoramic survey of the region around M31
© 2009 American Institute of Physics
Related content
News
/
Article
Data reanalysis throws existence of an ocean on Titan into question
The finding that the Saturnian moon may host layers of icy slush instead of a global ocean could change how planetary scientists think about other icy moons as well.
February 02, 2026 10:10 AM
News
/
Article
Crossword: February 2026
January 30, 2026 09:09 AM
News
/
Article
Q&A: Trity Pourbahrami helps scientists communicate their work
After a foray into international health and social welfare, she returned to the physical sciences. She is currently at the Moore Foundation.
January 29, 2026 01:35 PM
News
/
Article
The new math of network optimization, courtesy of string theory
Modeling the shapes of tree branches, neurons, and blood vessels is a thorny problem, but researchers have just discovered that much of the math has already been done.
January 29, 2026 12:52 PM

Get PT in your inbox

pt_newsletter_card_blue.png
PT The Week in Physics

A collection of PT's content from the previous week delivered every Monday.

pt_newsletter_card_darkblue.png
PT New Issue Alert

Be notified about the new issue with links to highlights and the full TOC.

pt_newsletter_card_pink.png
PT Webinars & White Papers

The latest webinars, white papers and other informational resources.

By signing up you agree to allow AIP to send you email newsletters. You further agree to our privacy policy and terms of service.