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  2. 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.

  3. 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 ...

  4. List of alleged extraterrestrial beings - Wikipedia

    en.wikipedia.org/wiki/List_of_alleged...

    Grey-skinned (sometimes green-skinned) humanoids, usually 1 m (3.3 ft) tall, hairless, with large heads, black almond-shaped eyes, nostrils without a nose, slits for mouths, no ears and 3–4 fingers including thumb. Greys have been the predominant extraterrestrial beings of alleged alien contact since the 1960s. [5] Hopkinsville goblin [6] [7] [8]

  5. 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 ...

  6. 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.

  7. Anthropic principle - Wikipedia

    en.wikipedia.org/wiki/Anthropic_principle

    In cosmology, the anthropic principle, also known as the observation selection effect, is the proposition that the range of possible observations that could be made about the universe is limited by the fact that observations are only possible in the type of universe that is capable of developing observers in the first place.

  8. The Walt Disney Co., which owns 20th Century Studios, claimed the top two spots on the charts for the second weekend in a row with “Alien: Romulus” following close behind the foul-mouthed ...

  9. List of reported UFO sightings - Wikipedia

    en.wikipedia.org/wiki/List_of_reported_UFO_sightings

    The Hills reported the first alien abduction experience to be widely spread in English-language publications. While driving home, they observed a light move through the sky and land ahead of them. Barney Hill said that, against his will, he turned the car down a side road towards the light, where he found six small humanoid beings waiting for them.