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  2. Binary black hole - Wikipedia

    en.wikipedia.org/wiki/Binary_black_hole

    The star field behind the black holes is being heavily distorted and appears to rotate and move, due to extreme gravitational lensing, as space-time itself is distorted and dragged around by the rotating black holes. [1] A binary black hole (BBH), or black hole binary, is a system consisting of two black holes in close

  3. List of black holes - Wikipedia

    en.wikipedia.org/wiki/List_of_black_holes

    OJ 287 core black holes — a BL Lac object with a candidate binary supermassive black hole core system [23] PG 1302-102 – the first binary-cored quasar — a pair of supermassive black holes at the core of this quasar [24] [25] SDSS J120136.02+300305.5 core black holes — a pair of supermassive black holes at the centre of this galaxy [26]

  4. List of most massive black holes - Wikipedia

    en.wikipedia.org/wiki/List_of_most_massive_black...

    The supermassive black hole at the core of Messier 87, here shown by an image by the Event Horizon Telescope, is among the black holes in this list. This is an ordered list of the most massive black holes so far discovered (and probable candidates), measured in units of solar masses (M ☉), approximately 2 × 10 30 kilograms.

  5. Kruskal–Szekeres coordinates - Wikipedia

    en.wikipedia.org/wiki/Kruskal–Szekeres_coordinates

    Any event inside the black hole interior region will have a future light cone that remains in this region (such that any world line within the event's future light cone will eventually hit the black hole singularity, which appears as a hyperbola bounded by the two black hole horizons), and any event inside the white hole interior region will ...

  6. OJ 287 - Wikipedia

    en.wikipedia.org/wiki/OJ_287

    A secondary black hole orbits the larger one with an observed orbital period of approximately 12 years and a calculated eccentricity of approximately 0.65. [4] The maximum brightness is obtained when the minor component moves through the accretion disk of the supermassive component at perinigricon .

  7. Blackhole (video game) - Wikipedia

    en.wikipedia.org/wiki/Blackhole_(video_game)

    The seemingly heroic act of collecting black holes was a ruse to create a larger hole, disposing of them discreetly while the public believed the crew to be saviours. The plan unravelled when the Coffee Guy pressed the emergency button before the crash, saving the crew and backing up Auriel into the PDA.

  8. List of guitar tunings - Wikipedia

    en.wikipedia.org/wiki/List_of_guitar_tunings

    The standard tuning, without the top E string attached. Alternative variants are easy from this tuning, but because several chords inherently omit the lowest string, it may leave some chords relatively thin or incomplete with the top string missing (the D chord, for instance, must be fretted 5-4-3-2-3 to include F#, the tone a major third above D).

  9. Black Hole (song) - Wikipedia

    en.wikipedia.org/wiki/Black_Hole_(song)

    "Black Hole" is a song by British singer-songwriter Griff, from her mixtape One Foot in Front of the Other. The song is written by Griff, Peter Rycroft, and Frederik Castenschiold Eichen and produced by Lostboy. The song was released on 18 January 2021 on the Warner Records label. [1]