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  2. White hole - Wikipedia

    en.wikipedia.org/wiki/White_hole

    Like black holes, white holes have properties such as mass, charge, and angular momentum.They attract matter like any other mass, but objects falling towards a white hole would never actually reach the white hole's event horizon (though in the case of the maximally extended Schwarzschild solution, discussed below, the white hole event horizon in the past becomes a black hole event horizon in ...

  3. Kruskal–Szekeres coordinates - Wikipedia

    en.wikipedia.org/wiki/Kruskal–Szekeres_coordinates

    The event horizons bounding the black hole and white hole interior regions are also a pair of straight lines at 45 degrees, reflecting the fact that a light ray emitted at the horizon in a radial direction (aimed outward in the case of the black hole, inward in the case of the white hole) would remain on the horizon forever.

  4. Human blood in veins is not actually blue. Blood is red due to the presence of hemoglobin; deoxygenated blood (in veins) has a deep red color, and oxygenated blood (in arteries) has a light cherry-red color. Veins below the skin can appear blue or green due to subsurface scattering of light through the skin, and aspects of human color ...

  5. Event horizon - Wikipedia

    en.wikipedia.org/wiki/Event_horizon

    At present, it is expected by the Hawking radiation mechanism that the primary impact of quantum effects is for event horizons to possess a temperature and so emit radiation. For black holes, this manifests as Hawking radiation, and the larger question of how the black hole possesses a temperature is part of the topic of black hole thermodynamics.

  6. Gravitational singularity - Wikipedia

    en.wikipedia.org/wiki/Gravitational_singularity

    However, it is hypothesized that light entering a singularity would similarly have its geodesics terminated, thus making the naked singularity look like a black hole. [ 19 ] [ 20 ] [ 21 ] Disappearing event horizons exist in the Kerr metric , which is a spinning black hole in a vacuum, if the angular momentum ( J {\displaystyle J} ) is high enough.

  7. Book Review: 'White Holes' by Carlo Rovelli reads more like ...

    www.aol.com/news/book-review-white-holes-carlo...

    It doesn't take a degree in astrophysics or expertise on Albert Einstein to appreciate “White Holes,” theoretical physicist Carlo Rovelli's latest book. Rovelli liberally sprinkles quotes from ...

  8. Cosmic censorship hypothesis - Wikipedia

    en.wikipedia.org/wiki/Cosmic_censorship_hypothesis

    Mathematically, the conjecture states that, for generic initial data, the causal structure is such that the maximal Cauchy development possesses a complete future null infinity. The strong cosmic censorship hypothesis asserts that, generically, general relativity is a deterministic theory, in the same sense that classical mechanics is a ...

  9. 40 Interesting Facts For Your Daily Dose Of New Knowledge ...

    www.aol.com/78-facts-today-learned-community...

    The phenomenon has since been proven mathematically and simulated in a lab, also proving the existence of rogue holes in the ocean. ... where he received radiation therapy for allegedly forcing ...