Explanation: The great variety of star colors in this open cluster underlie it's name: The Jewel Box. The bright central star Kappa Crucis is red, in contrast to the many blue stars that surround it. The cluster contains just over 100 stars, and might be no older than 10 million years. Open clusters are younger, contain few stars, and contain a much higher fraction of blue stars than do globular clusters. This Jewel Box lies about 7500 light-years away, so the light that we see today was emitted from the clusters before even the Great Pyramids in Egypt were built.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
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NASA Official: Jay Norris. Specific rights apply.
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& Michigan Tech. U.

Publikacii s klyuchevymi slovami: NGC 4755 - Rasseyannoe skoplenie - molodye zvezdy Publikacii so slovami: NGC 4755 - Rasseyannoe skoplenie - molodye zvezdy
Sm. takzhe: NGC 602: zvezdy protiv stolbov NGC 7789: Roza Karoliny NGC 602: zvezdnoe skoplenie Ustrica Skoplenie 37 Dvoinoe skoplenie v Persee Pleyady: zvezdnoe skoplenie Sem' sester Dvoinoe zvezdnoe skoplenie v Persee Vse publikacii na tu zhe temu >>