(December 1, 2018 at 3:44 pm)T0 Th3 M4X Wrote:(December 1, 2018 at 3:32 pm)Jehanne Wrote: The scientific term is "randomness".
Randomness? I don't want to seem insulting, but that's funny.
If you have two massive objects and there was a "trajectory" as mentioned in the paper, then how is that their rotation changed? Or how would it be different? That involves energy, and in enormous amounts. "Randomness" isn't a plausible answer. At least not if we're really wanting to understand the whole story, because they didn't just decide to spin the other way. Unless you believe they are conscious and could do it on their own without some external form of energy, that would've been, at the very least, released during some natural process. I'm not saying it's super natural, but it deserves an explanation or we might as well throw that paper in the waste basket. Plus we need to compensate for two separate events ,or anomalies, that would account for it happening with two planets divided with four other planets in between with opposing behavior.
Your questions will be easily answered by any undergraduate astronomy text, say, 21st Century Astronomy.