[It is only in recent years that I learned about the concept of "wandering planets" and "wandering stars". They call them rogue planets and rogue stars. These bodies were expelled from other solar systems and they wander through space. It is one of the creepiest and most dangerous things you can imagine. It is very freaky actually. And it's happened several times to our solar system. One day I'll do a video about this. To me it's the creepiest, weirdest thing I ever heard about in astronomy. It's firmly proven. It happens, and there is a star already on it's way to our solar system and it will mess things up in about 2 – 3 million years! Jan]
Here’s the video: https://www.youtube.com/watch?v=WB2LgS6U4Cg