Solar System belts

[6][7] The Grand tack hypothesis is a model of the unique placement of the giant planets and the Solar System belts.

[3][4][8] Most giant planets found outside our Solar System, exoplanets, are inside the snow line, and are called Hot Jupiters.

[5][9] Thus in normal planetary systems giant planets form beyond snow line and then migrated towards the star.

[12][13] [14][15] The asteroid and comet belts orbit the Sun from the inner rocky planets into outer parts of the Solar System, interstellar space.

[16][17][18] An astronomical unit, or AU, is the distance from Earth to the Sun, which is approximately 150 billion meters (93 million miles).