When a new celestial body, say a planet or a comet is discovered, the astronomer meets with the problem of determining the orbit from several observed positions of the body.
In astronomy, the longitude of a celestial body is the distance of its projection upon the ecliptic from the vernal equinox, counted in the direction west to east from o° to 360°.
The breastplate shows the god Ra as a winged scarab, made from the yellow, translucent gemstone, carrying the celestial bark with the Sun and the Moon into the sky. Carter identified the gem..查看文章
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