Friday May 30, 2025

Mare Crisium (evening)

On Friday evening, May 30, the dark oval of Mare Crisium will be framed inside the appealing crescent of the young moon. This 345 mile (556 km) diameter
basin is easy to see using your unaided eyes, binoculars, and any telescope.
It is located near the eastern edge of the moon, just north of the moon's equator (the up-down red curve). The wobble of the moon, known as lunar libration, shifts Mare Crisium higher and lower, and closer and farther from the moon's edge at various times.

(Data courtesy of Starry Night)
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