The solar system - set of space bodies, interaction between which is explained by laws of gravitation. The sun is the central object of the Solar system. Being from the Sun at different distance, planets rotate almost in one plane, in one direction on elliptic orbits. There was a birth of the Solar system as result of powerful compression of a cloud of gas and dust 4.57 billion years ago.
Wavelength, speed of its distribution and frequency of fluctuations are the sizes connected among themselves. Most quickly electromagnetic waves in a vacuum move, the speed of their distribution in other environments is much less. Sound waves on several orders more slowly.