https://youtu.be/0RzDVkgtfkI
Scholars argued about identity of Nibiru before Zechariah Sitchin was born, but the references indicate something more Starlike than a planet. Enter: Nemesis
Nibiru cataclysm
Wikipedia
The Nibiru cataclysm is a supposed disastrous encounter between Earth and a large planetary object that certain groups believed would take place in the early 21st century. Believers in this doomsday event usually refer to this object as Nibiru or Planet X.