7.4 — Cosmological Frontiers

Every rhythm has a horizon.
Every coherence has a reach.
Even the cosmos itself carries boundaries —
frontiers where persistence fades,
or where knowing cannot follow.

These are not edges of reality,
but thresholds of coherence and perception.

The Observable Horizon

Light travels at finite speed.
Beyond a certain distance,
its rhythm has not yet reached us.

This horizon is not the universe’s edge,
but the frontier of our resonance with it.

Event Horizons of Black Holes

Gravity can bend coherence inward beyond return.
Here, the frontier is not distance,
but inward bias so strong
that no rhythm escapes.

Black holes show that even persistence itself
can withdraw from shared knowing.

The Coherence Horizon

Some patterns cannot sustain themselves.
Particles decay,
systems dissolve,
stars burn out.

Each has a coherence horizon —
the point where rhythm can no longer persist.

The Expansion Horizon

As the cosmos accelerates,
some galaxies recede faster than light can bridge.
They cross beyond our reach,
forever part of the universe,
yet no longer part of our resonance.

Why Frontiers Matter

Frontiers remind us:
not all that exists can be measured.
Not all coherence can be known.

They are not failures of science.
They are features of rhythm —
limits built into persistence itself.

Closing

The cosmos is vast,
but not infinite in what it shares.

Frontiers are the edges of coherence,
the thresholds where rhythm withdraws.

Beyond them, reality continues,
whether or not we can follow.

Rhythmic Reality Model (RRM) – Master v2.5