Is there a reason why we have four “rock” planets lined up followed by four “gas” planets in a row, or is it merely coincidence?

Question

Is there a reason why we have four “rock” planets lined up followed by four “gas” planets in a row, or is it merely coincidence?

In: Planetary Science

Answer 1

Gases are far more abundant than “rocks” near to a star gases become dispersed further away they start to clump together the frost line is where the gas planets start to form as it get cooler. https://youtu.be/Mf8-bOBfG98