Астронет: Астрономическая картинка дня Далекое скопление галактик http://www.variable-stars.ru/db/msg/1161854/eng

Explanation: Every bright object in this 1994 photograph by the Hubble Space Telescope is a galaxy. Oddly - most of the objects are spiral galaxies. This rich cluster of galaxies, named CL 0939+4713, is almost half way across the visible universe. Photos like this indicate that clusters in the past contained a higher fraction of spirals than do nearby clusters, which are usually dominated by elliptical galaxies.

Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
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