Abstract
The emptiness of the interplanetary space in the solar system from large objects is very thought-provoking. For example, Consider the distance between Earth and Venus. This distance is about 25 thousand times the total diameter of Earth and Venus. It's like placing two small gravels on either side of a football pitch. Now, it would be self-deception to imagine that the protoplanetary disk didn't have enough material to form dozens of other planets in the wide space between Earth and Venus, and only these two tiny gravels formed in this huge pitch. An event must have cleaned the objects between Earth and Venus from the protoplanetary disk. Here we show that this event is the oscillation of a huge standing wave packet, with the wavelength λ = 0.6 AU, in the newborn protoplanetary disk of solar system.