Skip to comments.Astronomy Picture of the Day -- Colorful Clouds Near Rho Ophiuchi
Posted on 08/28/2012 2:52:46 PM PDT by SunkenCiv
Explanation: Why is the sky near Antares and Rho Ophiuchi so colorful? The colors result from a mixture of objects and processes. 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. Rho Ophiuchi lies at the center of the blue nebula near the top. 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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[Credit & Copyright: Tom O'Donoghue]
It’s from one of H.A. Rey’s books. Always liked his diagrams.
That’s lovely, and it’s also very busy. I still marvel at the stars and galaxies in the background. They’re like grains of sand, only sparkly. I like sparkly!
Ah, good times. Good times.
Why, are you curious, George?
Related to Ro Laren?
She turned my crank, even with the weird nose and the bitchy attitude.
Looks like “The Invaders”. :’)
And no limits found, so far. :’)
Thank you, darlin’! Fascinating.
So did Sarah Feingold.
but that's another story for another time
I’ve seen Shapley get more credit, but he was clearly not half-right — he was dead wrong about the size and makeup of the universe, embarrassingly so. Curtis was completely correct, apart from a too-small estimate of the size of the galaxy. But of course, Shapley was an unrepetent Commie.
It seems as if unrepentant commies get all the credit these days.
Too-small estimates about the size of the galaxy can be forgiven, I’d say, given the culture of the time. Not to forget the lack of Hubble-class telescopes.
Wow! That one’s GORGEOUS!
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