It’s Albert Einstein’s weirdest prediction — that the universe is sprinkled with massive objects so dense that not even light can escape them. Although Einstein was skeptical the theory was true, it has held for over a century. Today, astronomers are fairly convinced that nearly every galaxy (including our own) harbors a black hole so massive that it gobbles down any nearby gas and dust, often ripping stars to shreds. And while no one has seen a black hole directly, astronomers might finally be on the brink of doing just that.

For the next 10 days, eight radio observatories at six locations across the globe will be pointed toward the supermassive black hole that hides in the Milky Way’s center. Should the weather cooperate at these observatories — which span the peak of the world’s tallest volcano in Hawaii, the frigid landscape at the South…