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Sinus Iridum

American  
[see-nuhs ir-i-duhm, sahy-] / ˈsi nəs ˈɪr ɪ dəm, ˈsaɪ- /

noun

  1. (Bay of Rainbows ) a semicircular dark plain in the second quadrant of the face of the moon.


Example Sentences

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The photograph captures Sinus Iridum - also known as the Bay of Rainbows - a massive crater 260km across.

From BBC Sep. 12, 2024

"Shadow peaks of Sinus Iridum" by Gábor Balázs, from Hungary, took the top spot in the Our Moon category.

From BBC Sep. 12, 2024

Moon shot Chang’e 3, China’s third lunar mission, will land on Sinus Iridum — the ‘Bay of Rainbows’ — China’s National Space Administration said on 29 October.

From Nature Nov. 7, 2012

The “moon maiden” is a term applied to a fancied resemblance of a portion of the Sinus Iridum to a female head.

From Astronomical Curiosities Facts and Fallacies by Gore, J. Ellard

Along the whole shore of the bay runs a chain of gigantic mountains, forming the southern border of a wild and lofty plateau, called the Sinus Iridum Highlands.

From Astronomy with an Opera-glass A Popular Introduction to the Study of the Starry Heavens with the Simplest of Optical Instruments by Serviss, Garrett Putman

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