1 |
Spiral galaxiesSpiral galaxies usually consist of two major components: A flat, large disk which often contains a lot of interstellar matter (visible sometimes as reddish emission nebulae, or as dark dust clouds) and young (open) star clusters and associations which have emerged from them, often arranged in conspicuous and striking spiral patterns and/or bar stru [..]
|
<< Elliptical galaxies | Ideal district population >> |