What would we see if we fell into a Black Hole?

6,334,733
0
Published 2021-09-15
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 : youtube.com/ScienceClicEN
And if you liked this video, you can share it on social networks !

To support me on Patreon : www.patreon.com/ScienceClic
or on Tipeee : tipeee.com/ScienceClic

Facebook Page : facebook.com/ScienceClic
Twitter : twitter.com/ScienceClic
Instagram : instagram.com/ScienceClic

Alessandro Roussel,
For more info: www.alessandroroussel.com/en

_________________________________________________
ScienceClic Français : youtube.com/ScienceClic
ScienceClic Español : youtube.com/ScienceClicES
_________________________________________________
To learn more :
jila.colorado.edu/~ajsh/insidebh/schw.html
jila.colorado.edu/~ajsh/insidebh/realistic.html

All Comments (21)
  • @ScienceClicEN
    I hope you enjoy this video! As a bonus here is a VR 360° version of the fall : https://youtu.be/17tEg_uTF_A For more details about the simulation : - The apparent shape of the disc is calculated using raytracing and general relativity (I calculate the motion of light rays from the source to the observer, and the apparent angle of this lightray in the observer's frame of reference) - The disc however is not simulated, I created a volumetric shader to replicate GRMHD simulations of Sagittarius A* (a GRMHD simulation would require very powerful computers and a lot of computing time). You can find an example of such a simulation here : https://www.youtube.com/watch?v=J8sLSQ54bHE - The colour of the disc is calculated by converting an infinite temperature blackbody spectrum to CIE XYZ and RGB colour spaces - The parameters you see at the bottom left corner of the video are calculated analytically for a Schwarzschild infalling observer - I also did simulations for a Kerr black hole to make sure the results weren't too different (for example : https://www.youtube.com/watch?v=sFcnfg8KU1g) - For Sagittarius A* we don't know exactly the value of its angular momentum yet, therefore some details about its accretion disc and the shape of its horizon might change
  • @Julian-cp3vp
    "Suicide by Black Hole" sounds like something depressed rich people would try in the year 10765.
  • @EngineerMan
    It's all fun and games until you turn to pasta.
  • @icefamily1
    I've seen many videos on what happens if you fall into a black hole. I was expecting yet another focus on spaghettification, but I was learning from the first minute! This is a NEW, DIFFERENT perspective from other videos. In fact, if you watch just one video on how light and time are affected by a drop into a black hole, start with this one. The visuals were fantastic and educational.
  • @Lfbk22
    Imagine being spaghettified and ending up on someones plate, in another dimension, covered in tomato sauce.
  • @Danymok
    The dude who volunteered to jump into the black hole is a legend
  • @zaliron
    There's something very haunting about passing the event horizon, knowing you'll never return, but seeing the spaceship you came from getting larger as if you were being given a second chance to reconsider.
  • @Quartzplays309
    I want to thank the cameraman that went into the black hole to study this stuff. Hats off to him
  • @LunDruid
    It's always so fascinating learning something new about this scenario. The notion of the black hole's "surface" engulfing our view as we get closer to the event horizon is everywhere and is even what happens in Space Engine, and I appreciate very much the explanation of why that model is incorrect.
  • @asiancat9867
    Imagine going into a Blackhole thinking you are about to die, then you get teleported to another world.
  • Space is terrifying but at the same time just incredibly interesting
  • Black holes have always fascinated me. The universe itself pushed to its limits. It shocked me when Carl Sagan suggested, in Cosmos, that based on the density of the known universe, it's quite possible we're living inside a black hole right now.
  • @cadcTV
    well, this video finally helped me understand why the event horizon on a black hole looks warped on half of the hole, I appreciate the level of detail put into this!
  • Just send me in a black hole with rope and a gopro hero 10, i'll be fine Edit: Imagine if I survive and forgot to press record... I'll return inside with no rope this time
  • @Koromi6464
    This just proves that being a cameraman gives you immortality
  • @cjdemont
    I just want to comment that I’ve shared this video multiple times, describing it as “the best explanation of what would happen if you fell into a black hole I’ve ever seen.” Absolutely tremendous work and thank you!
  • @user-bf1ds9cc8l
    This is one of the absolute best videos on black holes I've ever seen.
  • @TjKnItTeL
    “The plasma itself, which can reach several billion degrees, might also as well burn us alive.” You don’t say
  • @classact9557
    3:18 This has got to be the most haunting picture of space I’ve ever seen. Almost like staring into oblivion itself.