iScientists now believe the asteriod belt was formed from the collishion of planets or small planetary bodies.. As Mr Sitchin had stated, the ancient sumerians said it was from the collishion between Tiamat(pre Earth) and the moons of nibiru.. Very close to what scientist are now saying..Link to Science alert article.

Scientists now think a planet hit Uranus and flipped it on its side, just as Mr Sitchin said the Ancients had described Nibiru as doing. Was it from Nibiru? link to article on Science Alert.