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Katie Mack

The End of Everything

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From one of the most dynamic rising stars in astrophysics, an accessible and eye-opening look—in the bestselling tradition of Sean Carroll and Carlo Rovelli—at the five different ways the universe could end, and the mind-blowing lessons each scenario reveals about the most important concepts in physics.
We know the universe had a beginning. With the Big Bang, it went from a state of unimaginable density to an all-encompassing cosmic fireball to a simmering fluid of matter and energy, laying down the seeds for everything from dark matter to black holes to one rocky planet orbiting a star near the edge of a spiral galaxy that happened to develop life. But what happens at the end of the story? In billions of years, humanity could still exist in some unrecognizable form, venturing out to distant space, finding new homes and building new civilizations. But the death of the universe is final. What might such a cataclysm look like? And what does it mean for us?
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281 printed pages
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Impressions

  • Evashared an impression4 years ago
    👍Worth reading
    💡Learnt A Lot
    🎯Worthwhile
    🚀Unputdownable

  • Olga Gshared an impression4 years ago
    👍Worth reading
    💡Learnt A Lot

Quotes

  • Evahas quoted4 years ago
    “I love the fact that my work, even if I do it 100 percent perfectly and I’m an incredible scientist, it changes nothing about the fate of the universe,” she says. “All we are trying to do is understand it. And even if you do understand it, we can do nothing to change it. I think that’s freeing rather than scary.”
    To Hložek, the Heat Death isn’t depressing, or boring. She calls it “cold and beautiful.” “It’s like the universe just sorts itself out,” she says.
  • Evahas quoted4 years ago
    How long do we have to wait for a breakthrough? We don’t (and can’t) know. We’re exploring off the edge of the map now. Clifford Johnson is very optimistic that we’re heading toward a better, deeper understanding of physics, but he acknowledges the caveat. “It might be that we go for a couple hundred years gathering all of this data before we see the signal and then we go back and realize that, oh, it was there staring us in the face all along. That’s an annoying possibility. But for questions as big as the ones we’re trying to answer, I feel that that’s okay. Why need it be of the length scale of a human lifetime?”
    In the meantime, we’ll continue on, making new paths through the woods to see what we might find hiding there. Someday, deep in the unknown wilderness of the distant future, the Sun will expand, the Earth will die, and the cosmos itself will come to an end. In the meantime, we have the entire universe to explore, pushing our creativity to its limits to find new ways of knowing our cosmic home. We can learn and create extraordinary things, and we can share them with each other. And as long as we are thinking creatures, we will never stop asking: “What comes next?”
  • Evahas quoted4 years ago
    I just want to pause for a moment to say that this paper, titled “Phantom Energy: Dark Energy with w < -1 Causes a Cosmic Doomsday,” is one of my absolute favorite papers in physics. It’s not often that you get to take some very mild-seeming alteration to the current perspective, shifting a parameter down by a minuscule amount, and find out that this DESTROYS THE ENTIRE UNIVERSE. Not only that, it gives you a way to calculate exactly how the universe will be destroyed, and when, and what it will look like when it all goes down.

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