This is my 'virgin' attempt at intercourse in this venue, so please be roughly gentle. (I.E.; this is my first post, I'm a bit slow (intellectually) but willing to learn. I tend to be somewhat playful in how I use words. I hope you will forgive me if I step outside the boundaries of appropriate decorum). My question concerns the relationship between the effects of a vacuum and the expanding universe. Outside the event horizon of the theoretically known universe (if I'm not being too presumptuous) it would seem, to me, reasonable to suppose a void or vacuum. Would it not therefore seem reasonable to expect an accelerating expansion of said universe due to the combined effects of Newton's law of gravity within the confines of a void/vacuum? Thank you for sharing you insights.