Planet Earth

Sunday, 28-November-2021

Login form


Most popular

  • शिव चालीसा, मंत्र Shiva mantra / Chalisa (40)
  • श्री गणेश मन्त्र Shri Ganesha mantra / chalisa (35)
  • दुर्गा माँ मन्त्र Durga Maa Mantra / chalisa (33)
  • काली माँ महाकाली भद्रकाली मंत्र Kali Maa Mantra (26)
  • Maha लक्ष्मी मन्त्र Lakshmi mantra (23)
  • free TAROT/Iching/Numerology/Astro readings links (23)
  • vegetarian diet - pictures - information - guide thread (21)
  • Vedic Physics - What ancient Indians did for us (18)
  • funny video compilation (17)
  • श्री हनुमान Hanuman chalisa / mantra (16)
  • Best of just for laughs (16)
  • Battlefield V gameplay HD (15)
  • श्री विष्णु मंत्र Sri Vishnu mantra / chalisa (15)
  • Warhammer 40,000 Inquisitor - Martyr gameplay HD (14)
  • Chakra Meditation / Kundalini Yoga/ healing कुण्डलिनी योग (13)
  • Astrology Yoga, bhava - Garga Hora by Sage Gargacharya (12)
  • All Zodiac signs explained (11)
  • Aryanblood


    Physicists Are Studying Mysterious 'Bubbles of Nothing' That - Forum

    [ New messages · Forum rules · Search · RSS ]
    • Page 1 of 1
    • 1
    Forum moderator: arya, dethalternate  
    Forum » Main » Science, Astronomy, Nature » Physicists Are Studying Mysterious 'Bubbles of Nothing' That
    Physicists Are Studying Mysterious 'Bubbles of Nothing' That
    ManuDate: Tuesday, 17-March-2020, 6:47 PM | Message # 1
    --dragon lord--
    Group: undead
    Messages: 12807
    Status: Offline
    Physicists Are Studying Mysterious 'Bubbles of Nothing' That Eat Spacetime

    A spontaneous hole in the fabric of reality could theoretically end the universe, but don't worry: physicists are studying the idea for what it can teach us about the cosmos.

    By Carly Minsky

    This article originally appeared on VICE US.

    The universe might be on track to eat itself from the inside out.

    Luckily for us, physicists studying the phenomenon, called “spacetime decay”, believe this is very unlikely. Still, the possibility is interesting enough to explore in mind-boggling detail, covering “bubbles of nothing” in spacetime, hidden extra dimensions, and a hypothetical observer hitching a ride on the outer surface of our universe.

    The idea that in specific scenarios the universe would be entirely destroyed by an expanding bubble of nothing has been around since 1982, when theoretical physicist Edward Witten introduced the possibility of the universe eating itself in a paper in Nuclear Physics B journal. He wrote: “A hole spontaneously forms in space and rapidly expands to infinity, pushing to infinity anything it may meet.”

    Given that a bubble of nothing has not in fact destroyed the universe, neither in the 13 billion years before Witten published his paper nor in the 38 years since, it would be reasonable for physicists to push it down the research priority list. But three physicists at the University of Oviedo in Spain and the University of Uppsala in Sweden argue that we can learn important lessons from an all-consuming, universe-destroying bubble in a wonderfully titled paper, “Nothing Really Matters”, submitted to the Journal of High-Energy Physics this month.

    In particular, understanding the conditions for spacetime decay through a bubble of nothing is a step towards connecting the best theories about the tiniest building blocks of the universe—strings—with theories about space and time itself.

    The unstable universe

    It's commonly understood that a vacuum is a region of total emptiness, so it’s confusing to think that our entire universe which contains planet earth, distant galaxies and everything in between is almost entirely a vacuum. But the fact that our universe is mostly vacuum is part of the reason it exists in a relatively stable state.

    Read more/source -
    Forum » Main » Science, Astronomy, Nature » Physicists Are Studying Mysterious 'Bubbles of Nothing' That
    • Page 1 of 1
    • 1