Sinus Iridum

[see-nuhs ir-i-duhm, sahy-]

noun

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

Example Sentences

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

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

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State broadcaster broadcast live footage of Chang'e-3 taking photos of Yutu, including a close-up of the national flag on the Yutu, in a flat plain known as Sinus Iridum, Latin for Bay of Rainbows, an unvisited area in the moon's north.

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The landing site of Sinus Iridum is a flat volcanic plain, part of a larger feature known as Mare Imbrium that forms the right eye of the "Man in the Moon".

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The robotic vehicle rolled down a ramp lowered by the lander and on to the volcanic plain known as Sinus Iridum.

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