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  2. Galaxy formation and evolution - Wikipedia

    en.wikipedia.org/wiki/Galaxy_formation_and_evolution

    The study of galaxy formation and evolution is concerned with the processes that formed a heterogeneous universe from a homogeneous beginning, the formation of the first galaxies, the way galaxies change over time, and the processes that have generated the variety of structures observed in nearby galaxies. Galaxy formation is hypothesized to ...

  3. Edwin Hubble - Wikipedia

    en.wikipedia.org/wiki/Edwin_Hubble

    Edwin Hubble was born to Virginia Lee Hubble (née James) (1864–1934) [14] and John Powell Hubble, an insurance executive, in Marshfield, Missouri, and moved to Wheaton, Illinois, in 1900. [15] In his younger days, he was noted more for his athletic prowess than his intellectual abilities, although he did earn good grades in every subject ...

  4. Hubble sequence - Wikipedia

    en.wikipedia.org/wiki/Hubble_sequence

    The Spindle Galaxy (NGC 5866), a lenticular galaxy with a prominent dust lane in the constellation of Draco See also: Lenticular galaxy At the centre of the Hubble tuning fork, where the two spiral-galaxy branches and the elliptical branch join, lies an intermediate class of galaxies known as lenticulars and given the symbol S0.

  5. 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.

  6. Milky Way - Wikipedia

    en.wikipedia.org/wiki/Milky_Way

    The Milky Way [c] is the galaxy that includes the Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye.

  7. Henrietta Swan Leavitt - Wikipedia

    en.wikipedia.org/wiki/Henrietta_Swan_Leavitt

    Henrietta Swan Leavitt ( / ˈlɛvɪt /; July 4, 1868 – December 12, 1921 [2]) was an American astronomer. [1] Her discovery of how to effectively measure vast distances to remote galaxies led to a shift in the scale and understanding of the scale and the nature of the universe. [3] Nomination of Leavitt for the Nobel Prize had to be halted ...

  8. Timeline of knowledge about galaxies, clusters of galaxies ...

    en.wikipedia.org/wiki/Timeline_of_knowledge...

    1995 — First detection of small-scale structure in the cosmic microwave background. 1995 — Hubble Deep Field survey of galaxies in field 144 arc seconds across. 1998 — The 2dF Galaxy Redshift Survey maps the large-scale structure in a section of the Universe close to the Milky Way. 1998 — The Hubble Deep Field South is compiled.

  9. Galileo Galilei - Wikipedia

    en.wikipedia.org/wiki/Galileo_Galilei

    Galileo di Vincenzo Bonaiuti de' Galilei (15 February 1564 – 8 January 1642), commonly referred to as Galileo Galilei (/ ˌ ɡ æ l ɪ ˈ l eɪ oʊ ˌ ɡ æ l ɪ ˈ l eɪ / GAL-il-AY-oh GAL-il-AY, US also / ˌ ɡ æ l ɪ ˈ l iː oʊ-/ GAL-il-EE-oh -⁠, Italian: [ɡaliˈlɛːo ɡaliˈlɛːi]) or simply Galileo, was an Italian astronomer, physicist and engineer, sometimes described as a ...

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