@matthewgrotke1442
David, good video. Another problem with creating a kugelblitz with even a solar collecting dyson swarm is: once the BH is formed at the Planck mass, you cannot feed it and make it more massive. It's radius (event horizon) is 3.233×10^-35 meters. That is orders of magnitude smaller than the size of a proton, which is 1.5346983×10^-18 meters in radius. It could never grow. It could fall to the center of the earth and would statistically never encounter another atom. And that's only if Hawking was wrong and the thing doesn't evaporate instantly. If it does evaporate, you can't add any more mass or energy to get it above the Planck mass. You can't add energy by dropping matter into it either for because the radiation pressure would be like trying to push a golf ball into a firehose. You can't add mass from a Dyson swarm of lasers because it would likely radiate energy away faster than you can add more. And by the way, the LHC can only produce energies up to 14 TeV, which is 2.5×10^-23 kg (well below the Planck mass of 2.1764×10^-8 kg). Such a black hole, if even possible would be 3.707×10^-50 meters in radius. The size of that black hole compared to a proton, is analogous to a proton compared to the orbit of Pluto.
@taddybear4244
This man strikes a peculiar balance between relaxing communication of science and the existential horror in science. I can fall asleep listening to his simultaneously relaxing communication and deeply distressing explanations.
@GMahlerVerehrer
These videos are the perfect synthesis of bold imagination and solid theoretical physics! Thanks so much, I wish all of you a happy new year!
@vipin4623
This channel has provided me the best stuff in 2019....and what a way to end the year....thanks Professor Kipping.....
@balwantpadaki6183
I am shocked that this channel doesnt have a million+ subs! Such great story telling, and visualization. Hope that your influence spreads far.
@ilovemin01
i love your voice and your tone and your story telling it calms me
@Lukionest
I had a small black hole that I put on my mantle, just like you mentioned at the end of your video. It was a nice conversation piece for a short while. Unfortunately it and the mantle seem to have fallen into the center of the Earth. I'm trying to get my money back from the manufacturer, but they seem to have disappeared from the surface of the Earth as well. This seems to be a constant problem with companies like this, according to the reviews I've read online.
@CodeLeeCarter
The Long awaited Cool Worlds, return with another awesome instalment into the Universe.
@daltonhall2816
The mantle piece idea mentioned at the end, now that’s a conversation starter
@exoplanets
Great video to finish 2019. I hope 2020 will be a good year for habitable exoplanet discoveries. Happy new year!
@jeffreyneedle2191
Outstanding video. Most coherent explanation of Hawking radiation that I have heard. Keep posting
@jariziel
Your are one of the coolest scientists I have seen! And somehow I have the feeling that you have amazing personality as well! :) Keep exploring, never stop this is journey worth lining. Happy new, year!!!
@stephenmneedham
I don't know who's crazier, Prof David for making these videos or us for watching them.
@glennrestvedt7143
MIND BLOWN once again. Great way to end the year kind Sir thank you!!!!!
@fsmoura
17:13 A thousand megawatts!? That's almost 1.21 jigawatts! Great Scott!
@GeorgeStar
Thank you for doing one of the few intelligent, non-patronizing science channels.
@RufusJacson
Just one of the best! Prof. David Kipping: "...an interstellar propulsion system that I devised -The Halo Drive...I'm also working on a way to use the Halo Drive as a way to use it as an in-situ power station without propulsion..." Whereas I've spent 3 weeks working on what the best hinges are to replace the ones on my wardrobe and thought I had life goals...😳
@Electronic424
My favorite astrophysics YouTuber
@LEDewey_MD
A new Cool Worlds video! Thank goodness, I was going through serious Cool Worlds withdrawal symptoms....!!
@CoolWorldsLab