#hotgas — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #hotgas, aggregated by home.social.
-
Superposed on an optical picture of a group of #galaxies is an image taken in #Xray light.
The X-ray picture, by #ROSAT, shows confined #hotgas highlighted in false red color, and provides clear evidence that the #gravity exerted in groups and clusters of galaxies exceeds all the individual component galaxies combined.
The extra gravity is attributed to #darkmatter.