What If You Kept Shrinking and Couldn't Stop?

What if you started shrinking… and couldn't stop? Past a dust mite. Past a single human hair. Through your own blood, inside a living cell, past a virus, through your DNA — and into an atom, where almost everything turns out to be empty space. Then deeper: inside a proton, down to the Planck length, the smallest scale physics can describe. And at the very bottom, something has been following you the whole time. Chapters 00:00 A speck of dust 00:47 Dust mites in your bed 01:47 A single human hair 02:41 Inside your blood 03:50 Inside a living cell 05:08 Where colour disappears 06:15 DNA: your instruction manual 07:22 Water and atoms 08:19 What an atom really looks like 09:14 Falling into empty space 09:56 The nucleus 10:41 Inside a proton 11:46 The Planck length 12:46 Where you really came from Write "hovering" in the comments if you made it to the atom. Subscribe — next time we go the other way: to the largest things in the universe. Visuals are scientific illustrations; colours at the smallest scales are false colour. #science #space #whatif