alt Hacker NewsI'm an amateur at best but I've only recently realised the implications of the observable universe, that is, we only know of the existence / size of the universe in what we can see, and there may be (and correct me if I'm wrong) way more Stuff beyond this 'boundary' whose light hasn't / will never reach us.
My understanding is for the geometry of our observable universe to make sense, our actual entire universe must be substantially larger to account for the mass needed to make it so.