Universe

Is it flat, closed or open? What evidence is there to support this choice?

Hello.

I'll try to explain so you can understand.

First imagine a line, it has a central point and a beginning/end.

Second imagine the surface of a ball, it has an infinte number of central points and an infinte number of beginnings and endings.

You must find out the rest by yourself or you won't understand.

Hope this helps.