Powers of ten are multiplicative — each step is ×10 diameter.
YOU
Walk one ladder from your body to the galaxy. Tap rungs on the left or use the button — each jump is a real factor in size.
SCALE LADDER
Read Scale Insight (top right) — it tells you how many cells, atoms, or Earths fit in one “you.” Drag the meter to feel ×10 jumps. On Atom, flip Wrong Physics.