Black Hole Sandbox

A realistic black hole, in the palm of your hand. Black Hole Sandbox gives you a scientifically accurate black hole, ray-traced live on your iPhone. It traces light through curved spacetime using the equations of general relativity: light that comes too close falls into the shadow, and light that passes nearby bends around it. The galaxy behind stretches into arcs, the far side of the disc lifts above and below the shadow, and a thin ring of photons wraps its edge. Orbit it, zoom in, and watch the light bend as you move around it in real time. TWO WAYS TO SEE IT • In-app 3D: set it against a whole galaxy or a field of stars, and watch the lensing bend everything behind it as you orbit around it. • In augmented reality: the star of the show! Put it in your living room, sit it on a table, and walk around it as it warps your room behind it. DESIGN YOUR OWN Go beyond realism and let's see…