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IC 342 (also known as Caldwell 5) is an intermediate spiral galaxy in the constellation Camelopardalis, located relatively close to the Milky Way.Despite its size and actual brightness, its location behind dusty areas near the galactic equator makes it difficult to observe, leading to the nickname "The Hidden Galaxy", [4] [1] though it can readily be detected even with binoculars. [5]
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In 2015, Euclid passed a preliminary design review, having completed a large number of technical designs as well as built and tested key components. [28] In December 2018, Euclid passed its critical design review, which validated the overall spacecraft design and mission architecture plan, and final spacecraft assembly was allowed to commence. [29]
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MACS J0025.4-1222 is a galaxy cluster created by the collision of two galaxy clusters, and is part of the MAssive Cluster Survey (MACS). Like the earlier discovered Bullet Cluster, this cluster shows a clear separation between the centroid of the intergalactic gas (of majority of the normal, or baryonic, mass) and the colliding clusters.
Abell 2390 is a massive galaxy cluster located in the constellation Pegasus. [4] It is classified as an X-ray and rich galaxy clusters measured cooling rate of 200-300 M ʘ yr -1 . [ 5 ] The galaxy cluster contains a cD galaxy called Abell 2390 BCG (short for brightest cluster galaxy), associated with a complex radio source , B2151+141.
The number of galaxies belonging to the cluster, out to (at least) the virial radius. parent The parent structure (e.g. parent galaxy cluster, parent supercluster...) richness Abell (or related) richness class. Based on number of members within a magnitude range of m 3 to m 3 +2, where m 3 is the magnitude of the third brightest member of the ...
Yun Wang is a Founder of ESA's Euclid Mission, which was launched on July 1, 2023. She has co-led one of the two major science working groups for the Euclid Consortium, the Euclid Galaxy Clustering Science Working Group. Wang has led galaxy clustering science for NASA's Nancy Grace Roman Space Telescope, with launch expected in October 2026.