Forget that subject on a first date, please. If all would hang on, now, until 3/2021, the new James Webb Space Telescope will launch and be deployed to the La Grange Point 2 area 940,000 miles past the Moon. The telescope will see in the Infra-red, see first light in the dark area that Hubble could not see, see the first 500,000 million years when the very first Stars lit up, see exoplanets and their atmospheres make up with a Spectrometer. Many answers will be answered if the Pumpkinheaded Baffoon doesnt cut the funds to NASA.

Hardly a topic of conversation on a first date unless a) The date is an Astrophysicists or b) You don't want a second date

Don't forget that it's a sphere only because we look outward in all directions the same amount of distance and time. Who knows what the real shape of this universe is? It could be flattened where it bumps up against the next universe. Chew on that for a while.

Does that mean then that space/time indicates the current expanding universe that we exist in is a sphere? If so, that, I guess, means that we are inside the sphere. So, and I know this not possible for me to ascertain, but I am sure there are some very bright minds that can, what would be the topography of the sphere's surface? HYpothetical I know, but who wants to give it a go?