What does a black hole look like? Which optical effects appear in its surroundings? What do we see when we cross its horizon? All these answers in 15 minutes! 0:00 - Introduction 1:53 - Before the fall 5:17 - Falling through the disc 8:26 - Crossing the horizon 12:42 - Conclusion This video is narrated by Octave Masson. For more videos, subscribe to the YouTube channel : https://www.youtube.com/ScienceClicEN And if you liked this video, you can share it on social networks ! To support me on Patreon : http://www.patreon.com/ScienceClic or on Tipeee : http://tipeee.com/ScienceClic Facebook Page : http://facebook.com/ScienceClic Twitter : http://twitter.com/ScienceClic Instagram : http://instagram.com/ScienceClic Alessandro Roussel, For more info: http://www.alessandroroussel.com/en _________________________________________________ ScienceClic Français : http://youtube.com/ScienceClic ScienceClic Español : http://youtube.com/ScienceClicES _________________________________________________ To learn more : https://jila.colorado.edu/~ajsh/insidebh/schw.html https://jila.colorado.edu/~ajsh/insidebh/realistic.html
  • TerminalEncounter [she/her]@hexbear.netEnglish
    1·
    10 months ago

    Also, do you eventually run into the light of the dying star that made the black hole before crossing the horizon? Cause it would’ve never crossed the horizon from your outside pov I think, or does it??? So I guess you’d be vaporized by that radiation if that’s what happens.

    • sicklemode [they/them]@hexbear.netOPEnglish
      2·
      10 months ago

      Everything that crosses the horizon remains on the horizon in the form of a still afterimage that becomes increasingly redshifted until becoming undetectable.

      Some hypotheses suggest that hawking radiation could carry this information back out away from the horizon, but it’s only a theory.

      The light of the dying star has already long radiated away from the black hole. Once the star becomes a black hole, there’s no way for all that light that already escaped to just become captured. See this video here to get a short visual explanation, by the same YouTuber.