ONE QUESTION. MORE THAN ONE WAY IN.

Choose Your Science Expedition

Some questions are too good to leave on a single page. Follow a trail through the Atlas, labs and evidence files, then return with a better question.

Three chapters. Eight meaningful stops. Start anywhere, revisit any stop, and pause between chapters. Completion is your choice, not a score.

Conceptual illustration of Europa’s icy surface and the hidden ocean question — Conceptual artwork, not a view beneath Europa’s ice.

3 CHAPTERS / 8 STOPS

The Ocean Nobody Has Seen

How can we investigate an ocean we cannot reach?

60–100 minutes, across several visits. Take as long as you like.

3 chapters · 8 stops

Start expedition →

Conceptual artwork illustrating a black hole and its surrounding light — AI concept artwork, not a telescope observation.

3 CHAPTERS / 8 STOPS

The Boundary of No Return

What can we know about a place that cannot send light back?

90–150 minutes, across several visits. Take as long as you like.

3 chapters · 8 stops

Start expedition →

Conceptual illustration of a planet passing in front of a luminous star — AI concept artwork; the linked lab uses actual Kepler observations.

3 CHAPTERS / 8 STOPS

A Planet Hidden in Starlight

When does a dip in a star’s light become evidence for a planet?

90–150 minutes, across several visits. Take as long as you like.

3 chapters · 8 stops

Start expedition →

YOUR PLACE IN THE STORY

Explorer’s Log

Completed stops are saved only in this browser. No account is needed. Progress does not sync to another device, and clearing browser data may remove it.

Open an expedition to begin your route.

Manage saved progress

Clear all expedition progress in this browser. Your science mystery casebook stays separate.

How saved expedition progress works.