Sky

Although almost everyone have seen it, sky is hard to be defined precisely. Generally, sky is the space seen when one looks upward from the surface of a planet. Some people define sky as the denser gaseous zone of a planet's atmosphere.

Clouds, rainbows and weather all occur amongst a planet's sky.

In astronomy, the sky is divided into many regions, called constellations. See also Chinese constellation.

more to add: celestial sphere...

Many cultures ascribed strong religious qualities to Earth's sky, believing it to be the home of the heavens and various deities.

Sky gods/goddesses in different cultures:

• Uranus, Zeus (Greek mythology)
• Shu, Nuit, Horus (Egyptian mythology)
• Cabaguil (Mayan mythology)
• Torngasoak (Inuit mythology)
• Anu (Goidelic mythology)
• Ashanti (Ashanti mythology)
• Denka[?] (Dinka mythology)
• Altjira, Baiame (Aborigine mythology)
• Sin (Haida mythology)
• Shanga[?] (Yoruba mythology)
• Gamab[?] (Khoikhoi mythology)

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