The red supergiant Antares and its spectacular field of view – COSMIC TRIBUNE
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IT’S NOT JUST IN YOUR MIND!

The red supergiant Antares and its spectacular field of view

Tom O'Donoghue

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Why is the sky near Antares and Rho Ophiuchi so colorful? …

Fine dust illuminated from the front by starlight produces blue reflection nebulae. Gaseous clouds whose atoms are excited by ultraviolet starlight produce reddish emission nebulae. Backlit dust clouds block starlight and so appear dark.

Antares, a red supergiant and one of the brighter stars in the night sky, lights up the yellow-red clouds on the lower center. … The distant globular cluster M4 is visible just to the right of Antares, and to the lower left of the red cloud engulfing Sigma Scorpii. These star clouds are even more colorful than humans can see, emitting light across the electromagnetic spectrum.

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