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Its fluorescence is due to excitation of the Hβ line in the nebula by the nearby prodigiously energetic O7 star, Xi Persei (also known as Menkib). [3] Infrared image showing xi Persei's interaction with the nebula including a (red) shock wave in the gas and dust (upper left) The California Nebula was discovered by E. E. Barnard in 1884.
IC 11, Sh2-184, [3] Sharpless 184, [1] LBN 616, LBN 123.17-06.28, Pacman Nebula See also: Lists of nebulae NGC 281 , IC 11 or Sh2-184 is a bright emission nebula and part of an H II region in the northern constellation of Cassiopeia and is part of the Milky Way 's Perseus Spiral Arm .
The nebula is known as S 142 in the 1959 Sharpless catalog (Sh2-142). [2] It is extremely difficult to observe visually, usually requiring very dark skies and an O-III filter. The NGC 7380 complex is located at a distance of approximately 8.5 kilolight-years from the Sun , in the Perseus Arm of the Milky Way .
IC 5146 (also Caldwell 19, Sh 2-125, Barnard 168, and the Cocoon Nebula) is a reflection [2] /emission [3] nebula and Caldwell object in the constellation Cygnus. The NGC description refers to IC 5146 as a cluster of 9.5 mag stars involved in a bright and dark nebula.
Known to be one of the hottest places on Earth, Death Valley’s temperatures have shown no mercy as they peaked on Sunday (16 July).. The National Park located in California, reached 128 degrees ...
Multiple major wildfires are leaving a trail of destruction and death in the Los Angeles area.. A handful of wildfires that kicked up on Jan. 7, powered by high winds and dry conditions, have ...
NGC 2244 (also known as Caldwell 50 or the Satellite Cluster) is an open cluster in the Rosette Nebula, which is located in the constellation Monoceros. This cluster has several O-type stars, super hot stars that generate large amounts of radiation and stellar wind. The age of this cluster has been estimated to be less than 5 million years.
A map of evacuation orders and warnings for the Sunset Fire in California, as of about 4:50 a.m. PT on Thursday, Jan. 9, 2025. Areas in red are under evacuation orders and areas in yellow are ...