What caused the Late Heavy Bombardment in our solar system?
A) Debris from the impact that formed the Moon scattered throughout the inner solar system.
B) The changing orbits of the giant planets disturbed the orbits of many asteroids.
C) The close passage of Scholz's star disturbed the orbits of bodies in the Oort cloud and Kuiper belt.
D) Gravitational resonances between Neptune and Kuiper belt objects caused many of the latter to collide with the inner planets.

Question

Quizplus · Accepted Answer

The Late Heavy Bombardment is believed to have been caused by the migration of the giant planets, particularly Jupiter and Saturn, which disturbed the orbits of asteroids and comets, sending them into the inner solar system.

What Caused the Late Heavy Bombardment in Our Solar System