Confused malcontents swilling Chardonnay while awaiting the Zombie Apocalypse.
Jenifer (Zarknorph) said:
our solar system is in the boondocks of one of the spiral arms. However our entire system revolves around that arm and every 50 million years we head into a more populated area. Coincidentally, every 50 million years sees a mass extinction on Earth. Also, every million years sees our system influenced by gravitational pulls from fly-by stars that tug at objects in the Ort cloud and slingshot them in towards our sun. Last one was about... one million years ago.
I'd have to read up on that to make sense of it.
The extinctions don't really behave like that.
The blue graph shows the apparent percentage (not the absolute number) of marine animal genera becoming extinct during any given time interval. It does not represent all marine species, just those that are readily fossilized. The labels of the traditional "Big Five" extinction events and the more recently recognised End-Capitanian extinction event are clickable hyperlinks. (source and image info) https://en.wikipedia.org/wiki/Extinction_event
OMG you now scrambled my brain! I feel as if it went thru a blender to make a smoothie!
I'm firmly on "Team big Crunch".
In the end, all that will be left are black holes.
That HAS to tip the balance of gravitational pull.
That sounded a tad ominous...
I have often remarked to my Wife after having visiting my MIL that she was not of this World
We know so much - but so little of the Solar System , we are not alone that I am sure of .