A custom-built camera that captures two billion frames per second turns the invisible into something you can almost feel, revealing a beam of light inching through space in ultra-slow motion. Each frame captures just a few centimeters of movement. Researchers use this footage to analyze the timing and behavior of light in ways that were previously impossible. At this scale, the beam can seem to change speed depending on the camera’s position, as tiny delays in light’s travel become visible. The

MIT has developed a camera so fast, it can actually capture light in motion! Recording at an astonishing 1 trillion frames per second, the camera lets scientists slow down the fastest thing in the universe and watch it move frame by frame. You can literally see light bounce off surfaces, pass through objects like fruit, and cast shadows — all with a visible delay. To put that into perspective: filming a bullet passing through an apple with this camera would result in a playback that takes an ent