Black hole videos (i.e., Black hole videos):
    1. Black hole destroying a star | 1:45 : The animation imagery seems of a black hole accreting mass from a binary companion. But the narrative is distinctly WRONG. Just talk it through myself. For important example of wrongness, stars will almost never DRIFT close to a black hole---they are formed with the black hole progenitor in a close binary system. A bit longish, but OK for the classroom.
    2. A Journey into a Black Hole | 6:54 : Authoritative, it seems. Too long for classroom.
    3. The positive side of black holes - Supermassive Black Holes - BBC | 2:31: Quasi-authoritative. Too long for classroom.
    4. Black Hole Eruption in the Galactic Center | 2:00: I don't attest to its authoritativeness. It seems OK, but too long for the classroom.
    5. "The Black Hole"-Opening Credits (1979 film) | 1:43: The opening credits and theme music by John Barry (1933--2011) for The Black Hole (1979 film). Starring: Ernest Borgnine (1917--2012), Maximilian Schell (1930--2014), Roddy McDowall (1928--1998), Yvette Mimieux (1942--2022). Evokes some of the mystery. Starts a bit slow for a sound effect. OK sometimes for an interlude for the classroom.
    Local file: local link: black_hole_videos.html.
    File: Black hole file: black_hole_videos.html.