M88 - The Leading Edge - Deep Sky Videos

From a channel Lumen includes in full: Deep Sky Videos has astronomers at the University of Nottingham discuss individual galaxies, nebulae and clusters, explaining what is known about each object and how it was observed; produced by Brady Haran.

A 5-minute video from DeepSkyVideos's catalogue; the title names its topic.

Video by DeepSkyVideos, played through YouTube's embedded player.