The cores of galaxies contain supermassive black holes, containing hundreds of millions of times the mass of Sun. As matter falls in, it chokes up, forming a super hot accretion disk around the black hole. From this extreme environment, the black hole-powered region spews out powerful jets of particles moving at the speed of light. Astronomers have recently gotten one of the best views at the innermost portion of the jet.

A team of astronomers led by Alan Marscher, of Boston University, used the National Radio Astronomy Observatory's Very Long Baseline Array (VLBA) to peer at the central region of a galaxy called BL Lacertae.
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