I'm working on a comic which is essentially alternate-history fiction, and a big upcoming part of it involves the formation of the Chicxulub crater 63 million years ago. As I am a stickler for accuracy where things don't actually matter, I was hoping to be able to portray the night sky accurately during that time period.
I tried using Stellarium to simulate the night sky back then, but it only allows me to go back about 63,000 years, and not the 63,000,000 I need. Presumably the model isn't particularly accurate beyond a certain point anyway, but I want to be able to say I Tried(tm).
Or should I just not worry about this, given that it's highly unlikely that any readers would recognize the night sky as being Earth's, much less of a particular geological epoch? (For what it's worth, even going 63,000 years back shows a completely different sky, with the constellations distorted beyond recognition.)