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  2. Hubble's law - Wikipedia

    en.wikipedia.org/wiki/Hubble's_law

    The Hubble length or Hubble distance is a unit of distance in cosmology, defined as cH −1 — the speed of light multiplied by the Hubble time. It is equivalent to 4,420 million parsecs or 14.4 billion light years. (The numerical value of the Hubble length in light years is, by definition, equal to that of the Hubble time in years.)

  3. Hubble volume - Wikipedia

    en.wikipedia.org/wiki/Hubble_volume

    The Hubble length / is 14.4 billion light years in the standard cosmological model, equivalent to times Hubble time. The Hubble time is the reciprocal of the Hubble constant, [5] and is slightly larger than the age of the universe (13.8 billion years) as it is the age the universe would have had if expansion was linear.

  4. Spiral galaxy - Wikipedia

    en.wikipedia.org/wiki/Spiral_galaxy

    Spiral galaxies form a class of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae [1] and, as such, form part of the Hubble sequence. Most spiral galaxies consist of a flat, rotating disk containing stars, gas and dust, and a central concentration of stars known as the bulge.

  5. Hubble zooms in on a dazzling star cluster that looks like a ...

    www.aol.com/hubble-zooms-dazzling-star-cluster...

    Hubble's latest image share is a good one for fans of cosmic razzle-dazzle.You're seeing NGC 6717, a globular cluster that forms a piece of the constellation Sagittarius. But where it appears to ...

  6. Hubble looks deep into our Milky Way galaxy, captures this ...

    www.aol.com/hubble-looks-deep-milky-way...

    Us Earthlings inhabit a solar system on one of the great spiral arms of the Milky Way galaxy.The legendary Hubble Space Telescope, orbiting Earth, peered inward and captured a vivid image of stars ...

  7. 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.

  8. NASA's Hubble Space Telescope captures mesmerizing look at ...

    www.aol.com/nasas-hubble-space-telescope...

    NASA's Hubble Space Telescope captured one such stunning scene in an image shared with the public on Saturday. NGC 7764A, as the galaxies are collectively known, is roughly 425 million light-years ...

  9. Elliptical galaxy - Wikipedia

    en.wikipedia.org/wiki/Elliptical_galaxy

    The giant elliptical galaxy ESO 325-4. An elliptical galaxy is a type of galaxy with an approximately ellipsoidal shape and a smooth, nearly featureless image. They are one of the three 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.