If we presume that the boundary of the universe is a kind of surrounding wall,
then we think like ancestors who thought there's abyss at the edge of flat earth.

If we presume that the boundary of the universe is a kind of surrounding wall, then we think like ancestors who thought there's abyss at the edge of flat earth.

We should have known much more than our ancestors.
But if we learn less, we're much more stupid than them.

There are no walls at the edge of this universe...absence of gravity is the limit of space existence.

There are no walls at the edge of this universe...
absence of gravity is the limit of space existence.

The mother-earth may not like
the way we preserve her...if any.