Sentences with phrase «most open star clusters»
Not exact matches
It is one of the most spectacular open star clusters in the whole sky.
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I shall remember this telescope most for two wonderful observations; gazing into the maw of Copernicus, and cleaving the double star components of epsilon Lyrae so cleanly that they looked like a small open cluster.
The additional 42 entries were mostly discovered earlier, and most of them (32) are open star clusters; there are no planetary nebulae, supernova remnants, elliptical and lenticular galaxies among them, and the only spiral galaxy in this list is our own, the Milky Way.
The density waves first concern interstellar matter, which is compressed, forms diffuse nebulae which become starforming regions, and later form (open) clusters and associations of young stars, the most lumionous and conspicuous of which are massive, hot, blue and short - lived.
An average open cluster has spread most of its member stars along its path after several 100 million years; only few of them have an age counted by billions of years.