Now, for the first time, astronomers may have a chance to watch as a giant black hole consumes a cosmic snack.

In March or April, a gas cloud that has been hurtling toward the center of the Milky Way is expected to collide with Sagittarius A*, a black hole that lies just 26,000 light-years from Earth. (The actual event, of course, took place 26,000 years ago.)

The cloud is as massive as three Earths — no match for the black hole, which has the mass of four million suns.

“This is a rare opportunity to witness spoon-feeding of a black hole,” said Avi Loeb, a theoretical astrophysicist at Harvard. “Will the gas reach the black hole, and if so, how quickly? Will the black hole throw up or spit the gas out in the form of an outflow or a jet?