[Dixie]

Originally Posted by Chocaholic

Correct me if I'm wrong, but that seems to be a pretty tight range. Certainly not random. Is it confirmed that this comet is traveling in a similar plane? And if so, wouldn't it more likely be a simple magnetic phenomenon rather than some super-genius alien programmed trajectory?

Planets orbit on a similar plane because they formed from the same flat, rotating disk of gas and dust that surrounded the early Sun. As the cloud collapsed under gravity, its rotation sped up, causing it to flatten into a disk (like a spinning pizza dough), and planets accreted from the material within this disk, resulting in them all sharing a similar orbital plane. This is supported by observations of similar disks around other young stars.
- Google