An alternative concept is that they formed closer to the Sun, where the matter density was higher, and then subsequently migrated to their current orbits after the removal of the gaseous protoplanetary disc. This hypothesis of migration after formation is favoured, due to its ability to better explain the occupancy of the populations of small objects observed in the trans-Neptunian region. The current most widely accepted explanation of the details of this hypothesis is known as the Nice model, which explores the effect of a migrating Neptune and the other giant planets on the structure of the Kuiper belt. COUNT 4
QSN1 If Neptune formed closer to the sun, what is the matter density? ANS1 higher QSN2 If Neptune formed closer to the sun, what caused it to migrate to it's current orbit? ANS2 removal of the gaseous protoplanetary disc QSN3 What is the most widely accepted explanation of Neptune's formation called? ANS3 the Nice model QSN4 What does The Nice model consider effected the migration of Neptune? ANS4 Kuiper belt.