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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...
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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...
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  • https://arxiv.org/abs/1402.4099
    Einstein's aborted attempt at a dynamic steady-state universe
    In June 1930 Einstein visited Cambridge where he stayed with Eddington who had just shown that Einstein's supposedly static universe of 1917 was not stable. This forced Einstein to rethink his cosmology. He spent January and February 1931 at Pasadena. There, he discussed cosmology intensely with Tolman, conscious that he had to replace his original model of 1917. However, at the end of February he still had not made up his mind about an alternative. The Albert Einstein Archives of Jerusalem (AEA) hold an undated draft, handwritten by Einstein, which I date to the beginning of January 1931. In this draft Einstein hopes to have found a solution to the cosmological problem: a stationary, dynamic universe in expansion. His model was stationary because particles leaving a given volume were replaced by particles created out of the vacuum, anticipating an idea of Bondi, Gold and Hoyle published in 1948. He saw the cosmological term as energy reservoir. However, he realised that his calculations contained a numerical error. When the error was corrected his steady-state-model collapsed.
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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.
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  • https://arxiv.org/abs/astro-ph/9901364
    Topology of the Universe: Theory and Observations
    ``One could imagine that as a result of enormously extended astronomical experience, the entire universe consists of countless identical copies of our Milky Way, that the infinite space can be partitioned into cubes each containing an exactly identical copy of our Milky Way. Would we really cling on to the assumption of infinitely many identical repetitions of the same world? >... We would be much happier with the view that these repetitions are illusory, that in reality space has peculiar connection properties so that if we leave any one cube through a side, then we immediately reenter it through the opposite side.'' (Schwarzschild 1900, translation 1998) Developments in the theoretical and observational sides of cosmic topology were slow for most of the century, but are now progressing rapidly, at the scale of most interest which is 1-10 h^-1 Gpc rather than 10kpc. The historical, mathematical and observational sides of this subject are briefly reviewed in this course.
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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://arxiv.org/abs/0805.2197
    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.
    ARXIV.ORG
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  • https://arxiv.org/abs/1311.2763
    Einstein's conversion from his static to an expanding universe
    In 1917 Einstein initiated modern cosmology by postulating, based on general relativity, a homogeneous, static, spatially curved universe. To counteract gravitational contraction he introduced the cosmological constant. In 1922 Alexander Friedman showed that Einstein's fundamental equation also allowed dynamical worlds, and in 1927 Geroges Lemaitre, backed by observational evidence, concluded that our universe was expanding. Einstein impetuously rejected Friedman's as well as Lemaitre's findings. However, in 1931 he retracted his former static model in favour of a dynamic solution. This investigation follows Einstein on his hesitating path from a static to the expanding universe. Contrary to an often repeated belief the primary motive for his switch was not observational evidence, but the realisation that his static model was unstable.
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  • https://en.wikipedia.org/wiki/Shuri_(Marvel_Cinematic_Universe)
    Shuri (Marvel Cinematic Universe)
    Shuri is a fictional character portrayed primarily by Letitia Wright in the Marvel Cinematic Universe (MCU) media franchise based on the Marvel Comics character of the same name, also inspired by the James Bond character Q. She is the courageous and tech-savvy younger sister of T'Challa, and the daughter of T'Chaka and Ramonda, all preceding monarchs of Wakanda. Highly intelligent and a master engineer, she is Wakanda's lead scientist and the princess of the country. Following her father's death, Shuri assists her brother in reclaiming the Wakandan throne from their cousin N'Jadaka and then helps remove Bucky Barnes's programming. Later, she assists the Avengers by attempting to use her technology to safely remove the Mind Stone from Vision's head. However, she gets stopped by Corvus Glaive and shortly after, falls victim to the Blip. After getting restored to life, she joins the battle against an alternate Thanos. Following her brother and mother's death, she becomes the new Black Panther, defeating Namor in combat and forming an alliance with Talokan against the rest of the world. As of 2024, the character has appeared in four...
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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.

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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.

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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
    }

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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.
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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 ...
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