Does Dark Matter Even Exist? Neil deGrasse Tyson on Dark Matter & MOND

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Does Dark Matter Even Exist? Neil deGrasse Tyson on Dark Matter & MOND Journey with us as Neil deGrasse Tyson plunges into the depths of one of the universe's most tantalizing questions: Does dark matter truly exist? This enigma, constituting nearly 85% of the universe's matter, remains unseen, influencing galaxies from the shadows. As scientists race to unravel its mysteries through groundbreaking experiments, theories like Modified Newtonian Dynamics (MOND) challenge the conventional wisdom. What revelations might arise from the external field effect observed across 150 galaxies? Could we be on the precipice of shattering longstanding beliefs about gravity and our universe's structure? Join us, as we dive deep into the interplay of particles, forces, and the very essence of existence, seeking answers to questions that have perplexed scientists for decades. And ponder, if dark matter is unmasked one day, how might it redefine our cosmic understanding? Subscribe to Science Time: https://www.youtube.com/sciencetime24 #neildegrassetyson #darkmatter #universe

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00:18:01

The True Scale Of Modern Nuclear Weapons

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,The terrifying true scale of modern nuclear weapons is beyond what most people can imagine. Nuclear Weapons today are far more powerful than those used in World War II. For example, the B83 nuclear bomb, the largest in the U.S. arsenal, is 80 times more powerful than the bomb dropped on Hiroshima. This single Nuclear Weapon could destroy an entire city like Beijing, causing millions of deaths and injuries. Submarine-launched missiles like the Trident II carry multiple Nuclear Weapons. Each missile can deliver up to eight warheads, each 30 times more powerful than the Hiroshima bomb. A single Trident II could devastate a city like Moscow, resulting in over 2.8 million immediate fatalities. China's Dongfeng 5 missile is another example of the terrifying power of Nuclear Weapons. It can carry up to 12 warheads, each 66 times more powerful than the Hiroshima bomb. If aimed at a city like Washington, D.C., the impact would be catastrophic, with over a million fatalities. Russia's R-36 missile, known as the "Satan" missile, can carry multiple Nuclear Weapons with immense destructive power. Some versions can deliver a single warhead up to 20 megatons, which is over 1,300 times the Hiroshima bomb. At the top of the list is Russia's RS-28 Sarmat missile, nicknamed "Satan 2." This Nuclear Weapon can carry up to 15 warheads and potentially deliver a 50-megaton bomb, causing unimaginable destruction to cities like New York. Even though some countries may face setbacks, the existence of these Nuclear Weapons means that even a few could cause unimaginable damage. The true scale of modern Nuclear Weapons shows that in a nuclear war, there are no winners—only devastating loss for humanity. Sources: https://nuclearsecrecy.com/nukemap/ U.S. Department of Energy https://www.energy.gov/ National Museum of the U.S. Air Force https://www.nationalmuseum.af.mil/ https://en.wikipedia.org/wiki/Nuclear_weapon Subscribe to Science Time: https://www.youtube.com/sciencetime24 #nukes #sciencetime #nuclearwinter

00:12:05

Why It's Impossible To Escape North Korea

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00:11:44

These Are The Events That Will Happen Before 2045 (Singularity)

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,These are the events that will happen before 2045. If we don't blow ourselves up, if an asteroid doesn't strike us down, if a virus doesn't eradicate the human species, or if any other catastrophic event, whether manmade or natural, doesn't occur, it's extremely likely that technological progress will not only continue, but accelerate. What will life be like, in 2045? "Prediction is very difficult, especially, if it's about the future." This quote, often attributed to Niels Bohr, captures the essence of our challenge when trying to foresee the events that will happen before this seemingly arbitrary year. So, what's so special about 2045? Why not try predicting events in 2050, or 2100? In a post-AGI world, if humans are still part of it, it will most certainly mean we have solved the AI alignment problem. A machine capable of outmatching any human in intelligence will create the blueprint for the machine that makes the next machine to achieve any of its goals. Automation will skyrocket, leading to what is called a "post-work society," where machines perform every mundane and even intellectual task. Any existing job will be performed much better by a machine, potentially leading to widespread unemployment. Even intellectual tasks will be outstripped by AI. Obviously, such an intelligent AGI will also be used for good, such as solving complex societal problems like disease. But even if we solve the AI alignment problem, our current political system will need drastic changes to counter the effects of a few companies owning AGI, creating trillions of dollars in wealth while the rest of society is left to starve. A sort of wealth redistribution system, perhaps even devised by AGI, will need to be enacted to address every job being lost to machines. But even if this political system problem is solved, some critics argue that this would create a false Utopia, as many of the now 8 billion-plus free of disease tourists who play Frisbie all the time, still find meaning in their work. Subscribe to Science Time: https://www.youtube.com/sciencetime24 #AI #sciencetime #AGI