to the idea that black
holes may connect with other
regions of the Universe, or
other universes entirely, but this
is purely speculation. Some
physicists have attempted to
combine quantum mechanics
with the General Theory of
Relativity and concluded that
black holes may not contain a
‘singularity’, the point at which
density becomes infinite. This
would open up the possibility
that black holes are shortcuts to
other universes. Actual
tunnels through space-time,
called ‘wormholes’, may be a
better bet for traversing between
universes. But although they’re
predicted by Einstein’s theories,
no wormholes have yet been
discovered, and there are
doubts that they could occur
naturally at all.
