The tipping of Uranus (ew) has been explained different ways, but with a “normal” system of moons, the planet must have tipped kinda sudden like due to huge impact; or there was some kind of encounter that caused the tipping, and the moon system was acquired at a later time (retrograde orbit is often considered diagnostic of capture, so having Uranus tipped counts, with the resulting moons’ orbits lying basically in the ecliptic and prograde by concensus with the rest of the planets’ moon systems); or there was some kind of later acquisition of the deep liquid atmosphere which came in cockeyed, flipped the planet’s axis, and the Uranian moon system used to be much bigger, some of the moons wound up lost, pulled in, etc; or the impact (a very big one) came in from what we’d call the polar direction, i.e., perpendicular or so with the solar ecliptic.
That’s what I’m saying. A planet sized object comes cruising by, not necessarily in a polar direction (how many large objects are traveling that kind of path in a solar system, or otherwise???. And just how does that much “deep liquid” come to be floating around that it can be “acquired” “later”?
But back to the basic proference. Extinctions happen every 27 million years. If we nuke Iran out of existence tomorrow, does that changed the 27M configuration. And if yes, by how much?
I’m telling you there is some grant money out there we should be getting our share of.