![]() This time around, it was quasistars and the surprisingly small mass of supermassive black holes located at galactic centers compared to the galaxies themselves. I’ve seen all their videos about black holes and related objects, and I always pick up something I never knew whenever a new one comes out. Videos about space are where Kurzgesagt really shines. So how do black holes grow and how large is the largest of them all? Although in reality specific things need to happen to create different kinds of black holes, from really tiny ones to the largest single things in the universe. In contrast to things like planets or stars they have no physical size limit, and can literally grow endlessly. The largest things in the universe are black holes. But practically, how big is the biggest, heaviest black hole in the universe? (A: More massive than the entire Milky Way.) For more information, consult their extensive list of sources or watch their earlier video on what the SARS-CoV-2 virus does to a human body.īlack holes are the largest single objects in the universe, many times larger than even the biggest stars, and have no upper limit to their size. I have read a lot about the human immune system over the past 18 months, but this video was still helpful in understanding how it all fits together. Kurzgesagt founder Philipp Dettmer is publishing a companion book to the series, Immune: A Journey Into the Mysterious System That Keeps You Alive it’s out in late September. Your biology protecting you from the billions of microorganisms that want to consume you and from your own perverted cells that turn into cancer. Every day it makes hundreds of billions of fresh cells. Your immune System consists of hundreds of tiny and two large organs, it has its own transport network spread throughout your body. The human immune system is the most complex biological system we know, after the human brain, and yet, most of us never learn how it works. In the first part of a multi-video series on how the human immune system works, Kurzgesagt describes how the system’s first lines of defense work when your body is invaded by microorganisms. That’s the basic idea, but there’s more to it…you should watch the video or, even better, read the series - I’ve read the entire trilogy twice and this makes me want to read it again! (I loved the Drive Easter egg towards the end of the video. Since we’re located in the wilderness of the periphery of the galaxy, we’re a little safer.” ![]() The precise location of the two worlds is still a mystery. From the information that has been sent out, all that can be learned is the distance between Earth and Trisolaris, and their general heading in the Milky Way. Humanity has not yet transmitted information about the exact position of Earth and the Solar System into the universe. But those shouts alone can’t be used to determine the child’s location. “But in this dark forest, there’s a stupid child called humanity, who has built a bonfire and is standing beside it shouting, ‘Here I am! Here I am!’” Luo Ji said. Shi Qiang lit another cigarette, if only to have a bit of light. It’s the explanation for the Fermi Paradox.” This is the picture of cosmic civilization. An eternal threat that any life that exposes its own existence will be swiftly wiped out. If he finds other life-another hunter, an angel or a demon, a delicate infant or a tottering old man, a fairy or a demigod-there’s only one thing he can do: open fire and eliminate them. The hunter has to be careful, because everywhere in the forest are stealthy hunters like him. Every civilization is an armed hunter stalking through the trees like a ghost, gently pushing aside branches that block the path and trying to tread without sound. ![]() I have The Dark Forest on the Kindle, so I looked up how this is explained in the book (spoilers, obvs): This is the Dark Forest solution to the Fermi paradox. Maybe the civilizations that attracted attention in the past were wiped away by invisible arrows. Maybe it’s full of civilizations but they are hiding from each other. We want to call out and reveal ourselves to anyone watching but that could be the last thing we ever do. We desperately want to know if we are alone in the Milky Way. Inspired by the second book in Liu Cixin’s excellent Three-Body Problem trilogy, Kurzgesagt made a video about the Dark Forest solution to the Fermi paradox.Ĭonfronted with the seemingly empty universe, humanity faces a dilemma.
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