If all particles in the universe were massless, then, the universe would look to them to be infinitely small.
The particles in an atom are infinitely small.
To be human is to love and care have to worry about health grief health, but can be up to those free and easy view of it as infinitely small, quiet and tends to make its own infinity.
If all particles in the universe were massless, then, the universe would look to them to be infinitely small. And an infinitely small universe is one that would undergo a Big Bang.
In Big Bang theory, the state of the Universe is a singularity in early times, meaning that the Universe was once infinitely small.
