Because, it is one the ling of the god of the gods. Shiva is considered as the divin ruler. His dancing statue where he has four legs and four hand explains the birth of the universe and the end of the universe. That one statue tell everyhting about the creation of teh world and its secret. Even modern physics cannot explain it in such a broad way...... Here is the picutre... http://www.yogasite.com.br/yogasite/images/shiva_nataraja.jpg http://upload.wikimedia.org/wikipedia/en/thumb/4/4d/Shiva.jpg/180px-Shiva.jpg You might have to read extra article for detail explanation of the statue. You might consider googling in a topic "Hinduism and Physics" or Hinduism and Astronomy or some liek that....