The cachalot is a giant cetacean seen vary rarely, for they often dive to deep depths. They're also known as sperm whales after their spermaceti, a waxy substance in the whale's head cavity, which is considered valuable.
(ËkÉzmÉªk) adj. 1. (Astronomy) of or relating to the whole universe: cosmic laws. 2. (Astronomy) occurring or originating in outer space, esp as opposed to the vicinity of the earth, the solar system, or the local galaxy: cosmic rays. 3. immeasurably extended in space or time; vast.
Astronomy (from Greek: Î±ÏÏÏÎ¿Î½Î¿Î¼Î¯Î±) is a natural science that studies celestial objects and phenomena. It applies mathematics, physics, and chemistry, in an effort to explain the origin of those objects and phenomena and their evolution.