Luna Journal

Luna Journal

Our universe

Stories about what we've learned building products and thinking about the world.

Between the world and you there is always a filter. We design inside it.

Our universe

Stories about what we've learned building products and thinking about the world.

Between the world and you there is always a filter. We design inside it.

Latest articles

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Earth seen from orbit against black space, sunlight rising along the curve — a finite surface with no edge, and the starting point for the question of whether the universe is finite

Jul 13, 2026

A Finite Universe Does Not End

What a finite universe actually is, why it has no edge and what we are really asking when we ask how big it is.

Earth seen from orbit against black space, sunlight rising along the curve — a finite surface with no edge, and the starting point for the question of whether the universe is finite

Jul 13, 2026

A Finite Universe Does Not End

What a finite universe actually is, why it has no edge and what we are really asking when we ask how big it is.

minimal black hole with light beams crossing event horizon, abstract gravity and attention metaphor, dark space composition, high contrast astrophysics concept, modern cosmic banner image

Apr 25, 2026

What Black Holes Teach Us About Attention

Every product either has gravity, or it doesn't. There is no middle ground.

minimal black hole with light beams crossing event horizon, abstract gravity and attention metaphor, dark space composition, high contrast astrophysics concept, modern cosmic banner image

Apr 25, 2026

What Black Holes Teach Us About Attention

Every product either has gravity, or it doesn't. There is no middle ground.

Microscopic plant organism with roots floating on dark background — visual metaphor for hidden product problems beneath the surface that cause low conversions and churn

Jun 17, 2026

Why the Real Problem Is Always Deeper

Low conversions, churn, product confusion. These are not problems. They are signals.

Microscopic plant organism with roots floating on dark background — visual metaphor for hidden product problems beneath the surface that cause low conversions and churn

Jun 17, 2026

Why the Real Problem Is Always Deeper

Low conversions, churn, product confusion. These are not problems. They are signals.

Earth seen from orbit against black space, sunlight rising along the curve — a finite surface with no edge, and the starting point for the question of whether the universe is finite

Jul 13, 2026

A Finite Universe Does Not End

What a finite universe actually is, why it has no edge and what we are really asking when we ask how big it is.

minimal black hole with light beams crossing event horizon, abstract gravity and attention metaphor, dark space composition, high contrast astrophysics concept, modern cosmic banner image

Apr 25, 2026

What Black Holes Teach Us About Attention

Every product either has gravity, or it doesn't. There is no middle ground.