A new source has appeared along the plasma jet emerging from the supermassive black hole of Messier 87 (M87), the central galaxy of the Virgo Cluster.
Hubble Space Telescope (STIS) data reveal the presence of this new Near-Ultraviolet source located along the axis of the jet between knots D and E. Likely physical origins for this new source are: (i) a nova in M87 or (ii) activity associated with the jet. Evidence for both phenomena exist in the literature: