Re: The Universe Is Not A Sphere

On 2024-11-12 21:35:12 +0000, LaurenceClarkCrossen said:

The Universe Is Not A Sphere

So it seems. However, the part of the Universe we can see looks,
except for minor irregularities, very similar to a small part of
a large sphere. But so does a small part of an Euclidean space.

So, parallel lines on its surface do not meet.

The path of a photon is a special kind of straight line. Light from
certain quasars (e.g. SBS 0957+561) come to us over two paths so that
the same qasars can be seen in two directions. This shows that two
stright lines can cross twice. Somewhere between the two crossings
they look parallel.
--
Mikko