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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 .
November 23 – Edwin Hubble announces his discovery that Andromeda, previously believed to be a nebula, is actually another galaxy, and that the Milky Way is only one of many such galaxies in the universe. [1] The Einstein Tower near Potsdam, Germany, designed by Erich Mendelsohn, becomes operational as an astrophysical observatory.
Studies of Living Nerves II. Activities of Amoeboid Growth Cones, Sheath Cells and Myelin Segments, as Revealed by Prolonged Observation of Individual Fibers in Frog Tadpoles 1930 M. A. Tuve, L. R. Hafstad and O. Dahl: Experiments with High Voltage Tubes 1929 Arthur J. Dempster: For his work on the reflection of protons from a calcite crystal: 1928
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.
The team nicknamed the star system Mothra due to its extreme magnification and brightness. Surprisingly, Mothra has appeared before, detected in Hubble observations nine years ago.
In 1924, American astronomer Edwin Hubble's measurement of the great distance to the nearest spiral nebulae showed that these systems were indeed other galaxies. Starting that same year, Hubble painstakingly developed a series of distance indicators, the forerunner of the cosmic distance ladder , using the 100-inch (2.5 m) Hooker telescope at ...
The Hubble Space Telescope is known for its dazzling images of cosmic phenomena, but it didn't exactly start that way. Its first ever image, captured 25 years ago today, is decidedly less exciting ...
Observations indicate that there are SMBHs located near the center of most normal galaxies. [ 191 ] [ 192 ] The nature of the Milky Way's bar is actively debated, with estimates for its half-length and orientation spanning from 1 to 5 kpc (3,000–16,000 ly) and 10–50 degrees relative to the line of sight from Earth to the Galactic Center.