Mare Vaporum

[ vey-pawr-uhm, -pohr- ]

noun

1. ( Sea of Vapors ) a dark plain in the first quadrant and near the center of the face of the moon: about 39,000 sq. mi. (101,000 sq. km).

Example Sentences

Something more than a hundred miles east-southeast from Menelaus, in the midst of the dark Mare Vaporum, is another brilliant ring mountain which catches the eye, Manilius.

From Project Gutenberg

Two crater mountains, in particular, are connected with them, Ariad�us at the eastern edge of the Mare Tranquilitatis and Hyginus on the southern border of the Mare Vaporum.

From Project Gutenberg

A portion of it is compared to the river Po, and he traces its course mile by mile up to the "delta" at its place of disemboguement into the Mare Vaporum.

From Project Gutenberg

On May 27, 1877, Dr. Hermann Klein of Cologne discovered, with a 5 1/2 inch Plosel dialyte telescope, a dark apparent depression without a rim in the Mare Vaporum, a few miles N.W. of Hyginus, which, from twelve years' acquaintance with the region, he was certain had not been visible during that period.

From Project Gutenberg

The counterscarp of the Apennines, in places 160 miles in width from east to west, runs down to the Mare Vaporum with a comparatively gentle inclination.

From Project Gutenberg