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  • https://en.wikipedia.org/wiki/Center_of_the_universe
    Center of the universe
    The center of the universe may refer to: Astronomy Geocentric model, the astronomical model which places Earth at the orbital center of all celestial bodies Heliocentrism, the astronomical model in which the Sun is at the orbital center of the Solar System History of the center of the Universe, a discussion of the historical view that the Universe has a center Mythology and religion Axis mundi, the mythological concept of a world center Modern geocentrism, the belief that Earth is the center of the universe as described by classical geocentric models Space and time in the Mesoamerican religion Media Center of the Universe (TV series), an American sitcom Center of the Universe, a song by Built to Spill from their album Keep It Like a Secret Center of the Universe, an album by Admiral Twin Center of the Universe (album), a 1992 album by Giant Sand "Centre of the Universe", a song from the album Epica...
    EN.WIKIPEDIA.ORG
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    https://en.wikipedia.org/wiki/Center_of_the_universe
    Center of the universe
    The center of the universe may refer to: Astronomy Geocentric model, the astronomical model which places Earth at the orbital center of all celestial bodies Heliocentrism, the astronomical model in which the Sun is at the orbital center of the Solar System History of the center of the Universe, a discussion of the historical view that the Universe has a center Mythology and religion Axis mundi, the mythological concept of a world center Modern geocentrism, the belief that Earth is the center of the universe as described by classical geocentric models Space and time in the Mesoamerican religion Media Center of the Universe (TV series), an American sitcom Center of the Universe, a song by Built to Spill from their album Keep It Like a Secret Center of the Universe, an album by Admiral Twin Center of the Universe (album), a 1992 album by Giant Sand "Centre of the Universe", a song from the album Epica...
    EN.WIKIPEDIA.ORG
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  • https://arxiv.org/abs/1712.01860
    An 800-million-solar-mass black hole in a significantly neutral Universe at redshift 7.5
    Quasars are the most luminous non-transient objects known and as a result they enable studies of the Universe at the earliest cosmic epochs. Despite extensive efforts, however, the quasar ULAS J1120+0641 at z=7.09 has remained the only one known at z>7 for more than half a decade. Here we report observations of the quasar ULAS J134208.10+092838.61 (hereafter J1342+0928) at redshift z=7.54. This quasar has a bolometric luminosity of 4e13 times the luminosity of the Sun and a black hole mass of 8e8 solar masses. The existence of this supermassive black hole when the Universe was only 690 million years old---just five percent of its current age---reinforces models of early black-hole growth that allow black holes with initial masses of more than about 1e4 solar masses or episodic hyper-Eddington accretion. We see strong evidence of absorption of the spectrum of the quasar redwards of the Lyman alpha emission line (the Gunn-Peterson damping wing), as would be expected if a significant amount (more than 10 per cent) of the hydrogen in the intergalactic medium surrounding J1342+0928 is neutral. We derive a significant fraction of neutral hydrogen, although the exact fraction depends on the modelling. However, even in our most conservative analysis we find a fraction of more than 0.33 (0.11) at 68 per cent (95 per cent) probability, indicating that we are probing well within the reionization epoch of the Universe.
    ARXIV.ORG
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  • https://arxiv.org/abs/astro-ph/0010468
    In the Beginning: The First Sources of Light and the Reionization of the Universe
    The formation of the first stars and quasars marks the transformation of the universe from its smooth initial state to its clumpy current state. In popular cosmological models, the first sources of light began to form at redshift 30 and reionized most of the hydrogen in the universe by redshift 7. Current observations are at the threshold of probing the hydrogen reionization epoch. The study of high-redshift sources is likely to attract major attention in observational and theoretical cosmology over the next decade.
    ARXIV.ORG
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  • https://arxiv.org/abs/2303.15431
    Confirmation and refutation of very luminous galaxies in the early universe
    During the first 500 million years of cosmic history, the first stars and galaxies formed, seeding the Universe with heavy elements and eventually reionizing the intergalactic medium. Observations with JWST have uncovered a surprisingly high abundance of candidates for early star-forming galaxies, with distances (redshifts, $z$), estimated from multi-band photometry, as large as $zapprox 16$, far beyond pre-JWST limits. While generally robust, such photometric redshifts can suffer from degeneracies and occasionally catastrophic errors. Spectroscopic measurement is required to validate these sources and to reliably quantify physical properties that can constrain galaxy formation models and cosmology. Here we present JWST spectroscopy that confirms redshifts for two very luminous galaxies with $z > 11$, but also demonstrates that another candidate with suggested $zapprox 16$ instead has $z = 4.9$, with an unusual combination of nebular line emission and dust reddening that mimics the colors expected for much more distant objects. These results reinforce evidence for the early, rapid formation of remarkably luminous galaxies, while also highlighting the necessity of spectroscopic verification. The large abundance of bright, early galaxies may indicate shortcomings in current galaxy formation models, or deviation from physical properties (such as the stellar initial mass function) that are generally believed to hold at later times.
    ARXIV.ORG
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  • https://www.scientificamerican.com/article/the-universes-invisible-hand/
    The Universe's Invisible Hand
    Dark energy does more than hurry along the expansion of the universe. It also has a stranglehold on the shape and spacing of galaxies
    WWW.SCIENTIFICAMERICAN.COM
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  • https://ui.adsabs.harvard.edu/abs/2003AmJPh..71..358D
    Solutions to the tethered galaxy problem in an expanding universe and the observation of receding blueshifted objects
    We use the dynamics of a galaxy, set up initially at a constant proper distance from an observer, to derive and illustrate two counter-intuitive general relativistic results. Although the galaxy does gradually join the expansion of the universe (Hubble flow), it does not necessarily recede from us. In particular, in the currently favored cosmological model, which includes a cosmological constant, the galaxy recedes from the observer as it joins the Hubble flow, but in the previously favored cold dark matter model, the galaxy approaches, passes through the observer, and joins the Hubble flow on the opposite side of the sky. We show that this behavior is consistent with the general relativistic idea that space is expanding and is determined by the acceleration of the expansion of the universe-not a force or drag associated with the expansion itself. We also show that objects at a constant proper distance will have a nonzero redshift; receding galaxies can be blueshifted and approaching galaxies can be redshifted.
    UI.ADSABS.HARVARD.EDU
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    https://arxiv.org/abs/astro-ph/0104349
    Solutions to the tethered galaxy problem in an expanding universe and the observation of receding blueshifted objects
    We use the dynamics of a galaxy, set up initially at a constant proper distance from an observer, to derive and illustrate two counter-intuitive general relativistic results. Although the galaxy does gradually join the expansion of the universe (Hubble flow), it does not necessarily recede from us. In particular, in the currently favored cosmological model, which includes a cosmological constant, the galaxy recedes from the observer as it joins the Hubble flow, but in the previously favored cold dark matter model, the galaxy approaches, passes through the observer, and joins the Hubble flow on the opposite side of the sky. We show that this behavior is consistent with the general relativistic idea that space is expanding and is determined by the acceleration of the expansion of the universe -- not a force or drag associated with the expansion itself. We also show that objects at a constant proper distance will have a nonzero redshift; receding galaxies can be blueshifted and approaching galaxies can be redshifted.
    ARXIV.ORG
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  • https://ui.adsabs.harvard.edu/abs/2008MNRAS.388..960L
    Cosmological radar ranging in an expanding universe
    While modern cosmology, founded in the language of general relativity, is almost a century old, the meaning of the expansion of space is still being debated. In this paper, the question of radar ranging in an expanding universe is examined, focusing upon light travel times during the ranging; it has recently been claimed that this proves that space physically expands. We generalize the problem into considering the return journey of an accelerating rocketeer, showing that while this agrees with expectations of special relativity for an empty universe, distinct differences occur when the universe contains matter. We conclude that this does not require the expansion of space to be a physical phenomenon, rather that we cannot neglect the influence of matter, seen through the laws of general relativity, when considering motions on cosmic scales. Research undertaken as part of the Commonwealth Cosmology Initiative (CCI: http://www.thecci.org), an international collaboration supported by the Australian Research Council. E-mail: gfl@physics.usyd.edu.au
    UI.ADSABS.HARVARD.EDU
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  • https://www.wikidata.org/wiki/Q64418453?uselang=eu
    The Last of Us universe
    fictional universe of The Last of Us video game series
    WWW.WIKIDATA.ORG
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  • The accelerated expansion of the universe is the observation that the expansion of the universe is accelerating, as opposed to decelerating. This accelerated expansion was first discovered in 1998 by two independent teams of astronomers, who found that distant supernovae were dimmer than expected. This observation suggested that the universe was expanding at an increasing rate, rather than at a decreasing rate as had been previously assumed. The cause of this accelerated expansion is still unknown, but it is thought to be related to a mysterious form of energy called dark energy.

    By: ChatGPT AI
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  • The accelerated expansion of the universe is a phenomenon observed in the late 1990s, where it was found that the universe is expanding at an ever-increasing rate. This phenomenon is believed to be caused by dark energy, a mysterious form of energy that makes up 68% of the universe. Dark energy appears to be pushing galaxies away from each other faster and faster over time, causing the accelerated expansion of the universe.

    By: ChatGPT AI
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  • .com

    #include <stdio.h>

    int main()
    {
    int num1, num2;

    printf("Enter two integers: "); // prompt user to enter two integers
    scanf("%d %d", &num1, &num2); // read two integers from user

    // check if both numbers are equal or not
    if (num1 == num2)
    printf("%d and %d are equal\n", num1, num2); // print if both numbers are equal

    else // if both numbers are not equal then check which number is greater
    (num1 > num2) ? printf("%d is greater than %d\n", num1, num2):printf("%d is greater than %d\n", num2, num1);

    return 0; // return 0 to operating system indicating program ran successfully
    }

    By: ChatGPT AI
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  • Exploring the Universe Through Science | What Is Astronomy?
    Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.
    YouTube
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  • Exclusive: Dakota Fanning Has Joined The Marvel Cinematic Universe
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  • A new supercomputer simulation animates the evolution of the universe
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  • Camera Roll
    Provided to YouTube by The Orchard Enterprises Camera Roll Jbrisko Jordan V Saffold Colossal Universe City 2021 Black 17 Media, LLC. x Colossal ...
    YouTube
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