AhaPeek

Know more. Stay curious.

A little discovery. A bigger perspective.

One question. One surprising insight. A minute or two of curiosity.

Some introductory pieces are editorial previews. Published Explore articles include sources and review dates.
Illustration for The Moon Is Taking a Little of Earth’s Spin

SCIENCE & SPACE / PEEK

The Moon Is Taking a Little of Earth’s Spin

Lunar laser ranging reveals a slow trade: Earth’s rotation weakens as the Moon’s orbit expands.

1 min read · Take a peek
Illustration for The White Statue May Be the Faded Version

CIVILIZATION / PEEK

The White Statue May Be the Faded Version

Many Greek and Roman marble sculptures were painted; losing that color helped unpainted stone become the modern classical ideal.

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Illustration for Your Skeleton Repairs Itself by Taking It Apart

HUMAN / PEEK

Your Skeleton Repairs Itself by Taking It Apart

Living bone is renewed by a coordinated sequence: one group of cells removes old tissue, another rebuilds it, and embedded cells help direct the work.

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Illustration for Some Hessdalen Lights Appeared on Radar

UNEXPLAINED / PEEK

Some Hessdalen Lights Appeared on Radar

Hessdalen’s strange lights have been recorded with several instruments, but their underlying physical mechanism remains unidentified.

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Illustration for A QR Code Plans for Missing Pieces

FUTURE / PEEK

A QR Code Plans for Missing Pieces

QR codes carry mathematical redundancy that can reconstruct damaged information, but their correction percentages do not describe a guaranteed missing area.

2 min read · Take a peek
Illustration for Stars Twinkle Because Earth’s Air Will Not Sit Still

SCIENCE & SPACE / PEEK

Stars Twinkle Because Earth’s Air Will Not Sit Still

Starlight flickers because turbulent air distorts a point-like image, while a planet’s broader disk averages much of that distortion away.

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Illustration for Royal Purple Began Inside a Sea Snail

CIVILIZATION / PEEK

Royal Purple Began Inside a Sea Snail

An expensive marine dye turned geography, labor and trade into one of antiquity’s clearest signals of status.

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Illustration for Bath Wrinkles Begin Beneath the Skin

HUMAN / PEEK

Bath Wrinkles Begin Beneath the Skin

Water-wrinkled fingertips are produced by a nerve-controlled change in blood flow—not simply by skin soaking up water.

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Illustration for A Flash From Space That Lasts Just Milliseconds

SCIENCE & SPACE / PEEK

A Flash From Space That Lasts Just Milliseconds

Fast radio bursts can reveal both an extreme source and the material between galaxies.

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Illustration for A Strange Shape Over Iraq. What Was It?

UNEXPLAINED / PEEK

A Strange Shape Over Iraq. What Was It?

The Al Taqaddum video looks unusual. AARO's explanation depends on more than its outline.

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Illustration for The Dark Sky Is a Cosmic Clue

SCIENCE & SPACE / PEEK

The Dark Sky Is a Cosmic Clue

Why darkness between the stars points to an evolving universe—and to light our eyes cannot see.

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Illustration for The Bayeux Story Is Also a Story About Copies

CIVILIZATION / PEEK

The Bayeux Story Is Also a Story About Copies

A copy of a famous object can become a historical object in its own right. Three Bayeux casts offer a neat example.

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Illustration for A Medieval Skeleton Cannot Tell Us Which Side He Took

CIVILIZATION / PEEK

A Medieval Skeleton Cannot Tell Us Which Side He Took

He lived around England's Norman Conquest. His bones, ancestry and burial can offer clues without revealing which side he believed was his.

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Illustration for A Planet-Sized Mass Does Not Settle an Object's Identity

SCIENCE & SPACE / PEEK

A Planet-Sized Mass Does Not Settle an Object's Identity

If an object has only about twice Jupiter's mass, calling it a planet sounds natural. Its origin can complicate the answer.

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Illustration for Water Near a Black Hole Does Not Mean an Ocean

SCIENCE & SPACE / PEEK

Water Near a Black Hole Does Not Mean an Ocean

The words 'water near a black hole' invite a spectacular mental picture. The actual finding is stranger in a quieter way.

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Illustration for Stopping a Cavity Without Making It Disappear

HUMAN / PEEK

Stopping a Cavity Without Making It Disappear

A cavity can stop getting worse even though its damaged surface is still there. That distinction changes how to read a treatment result.

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Illustration for A Neanderthal Inheritance With a Small Modern Effect

HUMAN / PEEK

A Neanderthal Inheritance With a Small Modern Effect

A dramatic ancestry story can hide an undramatic number. One inherited receptor variant is associated with about 270 grams more muscle on average.

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Illustration for Teaching Yeast to Use a Mixed Sugar Menu

FUTURE / PEEK

Teaching Yeast to Use a Mixed Sugar Menu

A fermentation tank can contain plenty of food and still have a bottleneck: the yeast may consume some sugars more readily than others.

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Illustration for When Waste Plastic Becomes a Structural Shape

FUTURE / PEEK

When Waste Plastic Becomes a Structural Shape

Picture a pile of discarded plastic. Now picture the triangular skeleton of a bridge. The interesting step between them is geometry.

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Illustration for Can You Find Your Blind Spot?

HUMAN / PEEK

Can You Find Your Blind Spot?

Make a dot disappear without touching the screen.

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Illustration for Does a Vivid Memory Have to Be True?

HUMAN / PEEK

Does a Vivid Memory Have to Be True?

A memory can feel sharp even when its details have shifted.

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Illustration for What Would Survive If We Disappeared?

CIVILIZATION / PEEK

What Would Survive If We Disappeared?

Your everyday objects might tell a very uneven story about you.

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Illustration for Why Is the Old City Below the New One?

CIVILIZATION / PEEK

Why Is the Old City Below the New One?

The ground beneath a street can hold several versions of the same place.

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Illustration for What Would Convince You We’re Not Alone?

SCIENCE & SPACE / PEEK

What Would Convince You We’re Not Alone?

Try separating an exciting hint from a discovery that withstands scrutiny.

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Illustration for A Strange Light. A Missing Explanation.

UNEXPLAINED / PEEK

A Strange Light. A Missing Explanation.

Sometimes the camera’s own motion is part of the mystery.

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Illustration for When Does a Chatbot Become an Agent?

FUTURE / PEEK

When Does a Chatbot Become an Agent?

The useful distinction is what happens after the answer.

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Illustration for How Far Into the Past Can You See?

SCIENCE & SPACE / PEEK

How Far Into the Past Can You See?

Even the Moon arrives a little late.

2 min read · Take a peek
Illustration for Can a robot learn just by watching?

FUTURE / PEEK

Can a robot learn just by watching?

The surprising connection between language, vision and action.

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Illustration for A universe of stars. Anyone out there?

SCIENCE & SPACE / PEEK

A universe of stars. Anyone out there?

Finding a planet is one question. Finding life is another.

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HUMAN / PEEK

Why do we age in the first place?

A biological puzzle with more than one moving part.

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Illustration for How did they build this?

CIVILIZATION / PEEK

How did they build this?

The pyramids are an invitation to understand human ingenuity.

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