Black Holes and the End of the Universe
Jul. 6th, 2026 09:14 pmWith a last-minute booking, I attended the public lecture "Monsters in the math: Black holes at the end of physics" by Dr Matt O'Dowd on Friday night with Nitul and Jacinta. Dr O'Dowd is an astrophysicist at City University of New York, and most famous as the writer and director of the YouTube Channel PBS Space-Time. With some 500 people in attendance, it was a fairly high-level and historical presentation, covering many of the great contributors to the subject, including Newton, the under-rated Mitchell (who coined "Dark Star"), Cavendish, Eddington, Chandraseker, and concluding with Hawking radiation which, if true, means that everything is lost, which is an ultimate end of the universe.
The topic rather reminded me of another physicist whose presentation I attended over a decade ago, which included contributions to the return of a static universe. Expressed simply, the idea is that gravity will pull nearby galaxies closer together, whereas those that have sufficient distance and velocity will increasingly get further away, resulting in a universe of tightly packed galaxies (a very bright night sky), but with enormous distances between these clusters. An issue I have with this is that almost every large and mature galaxy hosts a supermassive black hole at their centre, and they tend to be proportionate to the size of the galaxy. Combined with Hawking Radiation, one is drawn to the uncomfortable conclusion that ultimately everything reaches a complete thermal death where all matter eventually dissolves into a featureless sea of radiation.
Seriously, it's a very long time in the future (a mere 10^78 years according to recent calculations), and there are smarter minds than mine working on this problem, and many physicists think that quantum information will be retained. whether through the holographic principle, subtle quantum entanglements, or highly condensed quantum gravity cores. I readily admit I have not explored the issue in sufficient depth to form an opinion on the matter, but I do know, like with all scientific matters, the degree that we have advanced the modern age is nothing short of extraordinary, and what worries me more is that our moral reasoning instead moves in ebbs and flows over a more fixed range. If this is the case, then ultimately, as a species, there is a great possibility that we'll take ourselves out through our own technological progress. Happy Monday.
The topic rather reminded me of another physicist whose presentation I attended over a decade ago, which included contributions to the return of a static universe. Expressed simply, the idea is that gravity will pull nearby galaxies closer together, whereas those that have sufficient distance and velocity will increasingly get further away, resulting in a universe of tightly packed galaxies (a very bright night sky), but with enormous distances between these clusters. An issue I have with this is that almost every large and mature galaxy hosts a supermassive black hole at their centre, and they tend to be proportionate to the size of the galaxy. Combined with Hawking Radiation, one is drawn to the uncomfortable conclusion that ultimately everything reaches a complete thermal death where all matter eventually dissolves into a featureless sea of radiation.
Seriously, it's a very long time in the future (a mere 10^78 years according to recent calculations), and there are smarter minds than mine working on this problem, and many physicists think that quantum information will be retained. whether through the holographic principle, subtle quantum entanglements, or highly condensed quantum gravity cores. I readily admit I have not explored the issue in sufficient depth to form an opinion on the matter, but I do know, like with all scientific matters, the degree that we have advanced the modern age is nothing short of extraordinary, and what worries me more is that our moral reasoning instead moves in ebbs and flows over a more fixed range. If this is the case, then ultimately, as a species, there is a great possibility that we'll take ourselves out through our own technological progress. Happy Monday.