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The image shows the galaxy cluster SMACS 0723 as it appeared 4.6 billion years ago, [4] covering an area of sky with an angular size approximately equal to a grain of sand held at arm's length. [3] Many of the objects in the image have undergone notable redshift due to the expansion of space over the extreme distance traveled by the light ...
Details from the HDF illustrate the wide variety of galaxy shapes, sizes and colors found in the distant universe. Deep field image taken by ALMA and Hubble. [14] The HDF data provided extremely rich material for cosmologists to analyse and by late 2014 the associated scientific paper for the image had received over 900 citations. [15]
The most recent parallax measurements by the Gaia spacecraft indicate V1400 Centauri is located 450.8 ± 0.9 light-years (138.2 ± 0.3 parsecs) from the Sun. [1] Observations of V1400 Centauri's position over time have shown that it has a southwestward [b] proper motion consistent with that of the Scorpius–Centaurus association, an OB ...
The equivalent color on a computer to the pigment color red-violet shown above would be this electric purple, i.e. the much brighter purple reproduced on the screen of a computer. This color is pure purple conceived as computer artists conceive it, as the color on the color wheel halfway between color wheel violet and electric magenta. Thus ...
Size (left) and distance (right) of a few well-known galaxies put to scale. The following is a list of notable galaxies.. There are about 51 galaxies in the Local Group (see list of nearest galaxies for a complete list), on the order of 100,000 in the Local Supercluster, and an estimated 100 billion in all of the observable universe.
A spiral galaxy is a type of galaxy characterized by a central bulge of old Population II stars surrounded by a rotating disc of younger Population I stars. A spiral galaxy maintains its spiral arms due to density wave theory.
The Local Group, a cluster of gravitationally bound galaxies containing, among others, the Milky Way and the Andromeda Galaxy, is part of a supercluster called the Local Supercluster, centered near the Virgo Cluster: although they are moving away from each other at 967 km/s (2,160,000 mph) as part of the Hubble flow, this velocity is less than ...
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