There is an absolutely incredible cosmic object called PKS 1424+240. It is a blazar, a supermassive black hole that is spewing a jet of plasma at really high speed. This source has been a bit of a puzzle; the material on the jet doesn’t look like it's moving that fast as far as jets are concerned, but it is producing extremely energetic gamma rays, and it is the brightest neutrino-emitting blazar in the sky. Now, astronomers have finally worked out what is going on. The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

Thanks to 15 years of high-precision radio observation with the Very Long Baseline Array (VLBA), scientists have realized that we are basically looking down the barrel of the gun when it comes to this supermassive black hole

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