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Selene

(Encyclopedia)Selene səlēˈnē [key], in Greek mythology and mythology, moon goddess; daughter of the Titans Hyperion and Theia and sister of the sun god Helios. There was no known moon cult among the Greeks, but...

pemmican

(Encyclopedia)pemmican pĕmˈĭkən [key], a travel food of the Native North American. Slices of lean venison or buffalo meat were sun dried, pounded to a paste, and packed with melted fat in rawhide bags. Dried cu...

daylight saving time

(Encyclopedia)daylight saving time (DST), time observed when clocks and other timepieces are set ahead so that the sun will rise and set later in the day as measured by civil time. The amount of daylight on a given...

brick

(Encyclopedia)brick, ceramic structural material that, in modern times, is made by pressing clay into blocks and firing them to the requisite hardness in a kiln. Bricks in their most primitive form were not fired b...

inclination

(Encyclopedia)inclination, in astronomy, the angle of intersection between two planes, one of which is an orbital plane. The inclination of the plane of the moon's orbit is 5°9′ with respect to the plane of the ...

Nergal

(Encyclopedia)Nergal nŭrˈgäl, –gəl [key], ancient deity worshiped in Babylonia and Assyria. He was a god of the midsummer sun, of war, of the chase, and of the dead. He could be beneficent, but he was primari...

green flash

(Encyclopedia)green flash or emerald flash, a refractive phenomenon of the atmosphere where the top edge of the setting (or, less frequently, rising) sun will momentarily turn emerald green. The green color lasts f...

Anaxagoras

(Encyclopedia)Anaxagoras ănˌəksăgˈərəs [key], c.500–428 b.c., Greek philosopher of Clazomenae. He is credited with having transferred the seat of philosophy to Athens. He was closely associated with many f...

Afrofuturism

(Encyclopedia) Afrofuturism, artistic and cultural movement that is based on the wedding of African diasporic themes with modern technology and elements of science fiction and fantasy. The term is gener...

earth, in geology and astronomy

(Encyclopedia)CE5 A. Cross section of the earth, showing its shells B. Detailed cross section of the crust and upper mantle: The lithosphere consists of the hard rock in the crust and upper mantle, lying above t...