Discover
/
Article

Nearly 1000 more hard-to-spot galaxies found

JUN 24, 2015
Physics Today

Daily Beast : Earlier this year, 47 galaxies with certain similarities were found in the Coma Cluster . They are all nearly as large as the Milky Way but have only as many stars as dwarf galaxies and almost no gas, which makes them hard to detect. Now, 854 more of these “ultra diffuse galaxies” (UDGs) have been found in the same area, near the heart of the Coma Cluster. Despite the galaxies’ low density of stars and gas, their structures are similar to those of normal galaxies, which suggests they have an abundance of dark matter. However, until the galaxies’ mass can be measured, that cannot be confirmed. Whether UDGs are present in all galaxy clusters or only in old, large ones like the Coma Cluster is still an open question as well.

Related content
/
Article
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.
/
Article
/
Article
After a foray into international health and social welfare, she returned to the physical sciences. She is currently at the Moore Foundation.
/
Article
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.

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.