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  2. Interacting galaxy - Wikipedia

    en.wikipedia.org/wiki/Interacting_galaxy

    Interacting galaxies ( colliding galaxies) are galaxies whose gravitational fields result in a disturbance of one another. An example of a minor interaction is a satellite galaxy disturbing the primary galaxy's spiral arms. An example of a major interaction is a galactic collision, which may lead to a galaxy merger .

  3. Milky Way - Wikipedia

    en.wikipedia.org/wiki/Milky_Way

    Curtis noticed that these novae were, on average, 10 magnitudes fainter than those that occurred within the Milky Way. As a result, he was able to come up with a distance estimate of 150,000 parsecs. He became a proponent of the "island universes" hypothesis, which held that the spiral nebulae were independent galaxies.

  4. Physics Galaxy - Wikipedia

    en.wikipedia.org/wiki/Physics_Galaxy

    Physics Galaxy was founded as an online learning portal by Ashish Arora. [2] It was founded as an initiative to coach students for free especially for those in rural areas, who cannot afford expensive coaching facilities. Later in 2011, a YouTube channel of the same name was founded.

  5. Galaxy formation and evolution - Wikipedia

    en.wikipedia.org/wiki/Galaxy_formation_and_evolution

    Galaxy formation is hypothesized to occur from structure formation theories, as a result of tiny quantum fluctuations in the aftermath of the Big Bang. The simplest model in general agreement with observed phenomena is the Lambda-CDM model —that is, that clustering and merging allows galaxies to accumulate mass, determining both their shape ...

  6. Galaxy - Wikipedia

    en.wikipedia.org/wiki/Galaxy

    Galaxy. NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 55,000 light-years in diameter and approximately 60 million light-years from Earth. A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity.

  7. Secondary School Certificate - Wikipedia

    en.wikipedia.org/wiki/Secondary_School_Certificate

    Secondary School Certificate is a public exam for classes 9 and 10 separately. Class 9 exam is called SSC part-1 and class 10 exam is called SSC part-2. This exam is conducted by government boards, officially known as Boards of Intermediate and Secondary Education, or simply BISE. Provincial boards conduct the exams at provincial level and ...

  8. Elliptical galaxy - Wikipedia

    en.wikipedia.org/wiki/Elliptical_galaxy

    An elliptical galaxy is a type of galaxy with an approximately ellipsoidal shape and a smooth, nearly featureless image. They are one of the four main classes of galaxy described by Edwin Hubble in his Hubble sequence and 1936 work The Realm of the Nebulae, [1] along with spiral and lenticular galaxies. Elliptical (E) galaxies are, together ...

  9. Virgo Supercluster - Wikipedia

    en.wikipedia.org/wiki/Virgo_Supercluster

    Virgo Supercluster. The Virgo Supercluster ( Virgo SC) or the Local Supercluster ( LSC or LS) is a mass concentration of galaxies containing the Virgo Cluster and Local Group, which itself contains the Milky Way and Andromeda galaxies, as well as others. At least 100 galaxy groups and clusters are located within its diameter of 33 megaparsecs ...

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