According to modern theories, one significant difference between the formation of the terrestrial and jovian planets is that:

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Modern theories suggest that both the terrestrial and jovian planets formed by accretion of planetesimals. However, the jovian planets were able to attract gas directly from the solar nebula due to their greater mass, which allowed them to accumulate gas quickly before the nebula dispersed. In contrast, the terrestrial planets were not massive enough to attract gas directly, and so their growth was limited to the solid planetesimals in their vicinity. This led to the formation of small, rocky planets with thin atmospheres, while the jovian planets grew much larger and acquired thick atmospheres dominated by hydrogen and helium.

According to Modern Theories, One Significant Difference Between the Formation