NASAのインスタグラム(nasagoddard) - 8月11日 02時02分

This @NASAHubble image shows the colorful globular cluster NGC 2108. The cluster is nestled within the Large Magellanic Cloud, in the constellation of the Swordfish (Dorado). It was discovered in 1835 by the astronomer, mathematician, chemist and inventor John Herschel, son of the famous William Herschel.

The most striking feature of this globular cluster is the gleaming ruby-red spot to the lower left of the cluster’s center (on the right side of the image). What looks like the cluster’s watchful eye is actually a carbon star. Carbon stars are almost always cool red giants, with atmospheres containing more carbon than oxygen — the opposite of the Sun. Carbon monoxide forms in the outer layer of the star through a combination of these elements, until there is no more oxygen available.

Credit: ESA/Hubble & NASA #nasagoddard #Hubble #space #science

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