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The largest galaxies are called elliptical because they look like big globes of light emitted from a multitude of stars. The most famous elliptical galaxy is M87, which has up to 2.4 trillion stars.
Messier 81 (also known as NGC 3031 or Bode's Galaxy) is a grand design spiral galaxy about 12 million light-years away in the constellation Ursa Major.It has a D 25 isophotal diameter of 29.44 kiloparsecs (96,000 light-years).
The galaxies in the vicinity of Stephan's Quintet. The rectangle indicates the area covered by the 1998–99 Hubble Space Telescope image below. A sixth galaxy, NGC 7320C, probably belongs to the Hickson association: it has a redshift similar to the Hickson galaxies, and a tidal tail appears to connect it with NGC 7319. [9]
Astrophysics – branch of astronomy that deals with the physics of the universe, including the physical properties of celestial objects, as well as their interactions and behavior. [ 1 ] [ 2 ] Among the objects studied are galaxies, stars , planets, exoplanets , the interstellar medium and the cosmic microwave background ; and the properties ...
By measuring the shape and movement of galaxies as far as 10 billion light-years away, astronomers hope to learn more about the dark energy and matter that make up 95% of the universe.
Some objects originally thought to be deep sky objects and listed in the NGC have been subsequently shown to be ordinary stars, so their inclusion in the catalog is now considered erroneous. [1] This list of stars is based on the 'NGC 2000.0' version of the catalog, which lists the stars in its errata, [ 1 ] supplemented with data on each ...
The radii of these objects range over three orders of magnitude, from planetary-mass objects like dwarf planets and some moons to the planets and the Sun. This list does not include small Solar System bodies , but it does include a sample of possible planetary-mass objects whose shapes have yet to be determined.
Webb's First Deep Field is the first full false-color image from the JWST, [12] and the highest-resolution infrared view of the universe yet captured. [11] The image reveals thousands of galaxies in a tiny sliver of the universe, with Webb's sharp near-infrared view bringing out faint structures in extremely distant galaxies, offering the most ...