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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.
Some of the most populated cities across the United States are also some of the hottest places to be during the summer with temperatures regularly climbing above 100 F. Many cities don't come ...
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 ...
R136a1 has a surface temperature of around 46,000 K (45,700 °C; 82,300 °F), eight times as hot as the Sun, and with peak radiation in the extreme ultraviolet. [ 4 ] R136a1 has a B–V index of about 0.03, which is a typical colour for an F-type star .
The marine layer effect is weakened when a weak high pressure system is in place over the region, and the marine layer will be very weak or nonexistent when there is a strong high-pressure system affecting southern California. The National Weather Service graphic on the right explains the effects of atmospheric conditions upon the marine layer ...
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N11 (also known as LMC N11, LHA 120-N 11) is the brightest emission nebula in the north-west part of the Large Magellanic Cloud in the Dorado constellation. [4] The N11 complex is the second largest H II region of that galaxy, the largest being the Tarantula Nebula. It covers an area approximately 6 arc minutes across. [5]
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