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  2. Hubble sequence - Wikipedia

    en.wikipedia.org/wiki/Hubble_sequence

    Later observations (by Hubble himself, among others) showed Hubble's belief to be correct and the S0 class was included in the definitive exposition of the Hubble sequence by Allan Sandage. [12] Missing from the Hubble sequence are the early-type galaxies with intermediate-scale disks, in between the E0 and S0 types, Martha Liller denoted them ...

  3. Edwin Hubble - Wikipedia

    en.wikipedia.org/wiki/Edwin_Hubble

    Edwin Powell Hubble (November 20, 1889 – September 28, 1953) [1] was an American astronomer. He played a crucial role in establishing the fields of extragalactic astronomy and observational cosmology .

  4. Mount Wilson Observatory - Wikipedia

    en.wikipedia.org/wiki/Mount_Wilson_Observatory

    It was used by Edwin Hubble to make observations with which he produced two fundamental results which changed the scientific view of the Universe. Using observations he made in 1922–1923, Hubble was able to prove that the Universe extends beyond the Milky Way galaxy, and that several nebulae were millions of light-years away.

  5. Saving Mt. Wilson Observatory: Inside the long battle to ...

    www.aol.com/news/saving-mt-wilson-observatory...

    9:05 a.m. Oct. 3, 2023: An earlier version of this story said Edwin Hubble used the label “N” on a photographic plate to mean nebula. It stood for nova. ... In the moon glow of Mt. Wilson, go ...

  6. Cosmic distance ladder - Wikipedia

    en.wikipedia.org/wiki/Cosmic_distance_ladder

    The observational result of Hubble's law, the proportional relationship between distance and the speed with which a galaxy is moving away from us, usually referred to as redshift, is a product of the cosmic distance ladder. Edwin Hubble observed that fainter galaxies are more redshifted. Finding the value of the Hubble constant was the result ...

  7. Rare moon trifecta on Jupiter captured by hubble

    www.aol.com/article/2015/02/05/rare-moon...

    NASA's Hubble Space Telescope captured images of three of Jupiter's largest moons -- Callisto, Io, and Europa -- crossing the planet's face in the same frame, an occurrence that only happens once ...

  8. Galaxy morphological classification - Wikipedia

    en.wikipedia.org/wiki/Galaxy_morphological...

    Spiral galaxy UGC 12591 is classified as an S0/Sa galaxy. [1]The Hubble sequence is a morphological classification scheme for galaxies invented by Edwin Hubble in 1926. [2] [3] It is often known colloquially as the “Hubble tuning-fork” because of the shape in which it is traditionally represented.

  9. Observational cosmology - Wikipedia

    en.wikipedia.org/wiki/Observational_cosmology

    Two years later, Hubble showed that the relation between the distances and velocities was a positive correlation and had a slope of about 500 km/s/Mpc. [10] This correlation would come to be known as Hubble's law and would serve as the observational foundation for the expanding universe theories on which cosmology is