Jupiter was the first giant planet formed.
According to the Nice theory where did the Kuiper belt objects and Oort cloud objects come from?
Kuiper belt objects come from the out edge of Solar System where huge spheres made of rock and ice that circle around Pluto’s orbit. The objects took their name from Gerard Kuiper who suggested that comets may come from the Kuiper belt. This group of planetoids is called Kuiper belt objects (KBO). The first KBO named “1991 QB1” was discovered in 1992. The plant Pluto also belongs to the group ...