Edition · Saturday, 16 May 2026
What happened, the forces beneath it, why it matters — then your turn.
01 · Lesson · why it matters
How to photograph the invisible
The cosmic web connects all galaxies, but it's made of dark matter and gas we can't see. Astronomers just imaged it directly by reading light's fingerprints—a lesson in how science sees what cameras can't capture.
Read the lesson
02 · Lab · your turn
Shadow Reveals Structure
When you cannot observe something directly, measuring what it removes from a known source—which wavelengths it absorbs, which signals it blocks—turns absence into readable evidence of composition and form.
Rehearse the decision