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NGC 1491, also known as LBN 704, SH2-206 or the Fossil Footprint Nebula, is an emission type bright nebula located about 9,800 light years away from Earth in the constellation of Perseus. [1] The nebula gets its deep red coloration due to many massive stars (such as BD+50 866 ) embedded within NGC 1491 producing large amounts of ultraviolet ...
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30–400 kK on a planetary nebula's asymptotic giant helium star; 36 kK boundary between inner and outer core within Jupiter; 37 kK in proton–electron reactions; 38 kK on Eta Carinae; 46 kK on Wolf–Rayet star R136a1 [10] 50 kK at protostar (core) 54.5 kK on ON2 III(f*) star LH64-16 [11] >200 kK in Butterfly Nebula
Based on the expansion rate, the estimated age of the nebula is 3,080 years. [5] The central star of the planetary nebula is a subdwarf O star with a spectral type of sdO. [7] The best fit model for this star gives an effective temperature of 100 kK, with 5,250 times the luminosity of the Sun [5] and 60.5% of the Sun's mass. [6]
Sagittarius B2 (Sgr B2) is a giant molecular cloud of gas and dust that is located about 120 parsecs (390 ly) from the center of the Milky Way.This complex is the largest molecular cloud in the vicinity of the core and one of the largest in the galaxy, spanning a region about 45 parsecs (150 ly) across. [2]
Two people are dead after a plane crashed into a building near the Daniel K. Inouye International Airport in Honolulu, according to reports. At around 3:15 p.m. local time on Tuesday, Kamaka Air ...
The North American Aerospace Defense Command defends North American airspace 24 hours a day, 365 days a year. But on Christmas Eve, it tackles perhaps its most important mission: tracking Santa ...