Day: June 17, 2021

NGC 6888: The Crescent Nebula

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NGC 6888, also known as the Crescent Nebula, is a about 25 light-years across blown by winds from its central, bright, massive star. A triumvirate of astroimagers ( Joe, Glenn, Russell) created this sharp portrait of the cosmic bubble. Their telescopic collaboration collected over 30 hours of narrow band image data isolating light from hydrogen and oxygen atoms. The oxygen atoms produce the blue-green hue that seems to enshroud the detailed folds and filaments. Visible within the nebula, NGC 6888’s central star is classified as a Wolf-Rayet star (WR 136). The star is shedding its outer envelope in a strong stellar wind, ejecting the equivalent of the Sun’s mass every 10,000 years. The nebula’s complex structures are likely the result of this strong wind interacting with material ejected in an earlier phase. Burning fuel at a prodigious rate and near the end of its stellar life this star should ultimately go out with a bang in a spectacular supernova explosion. Found in the nebula rich constellation Cygnus, NGC 6888 is about 5,000 light-years away. via NASA https://ift.tt/2S8Qf7W

Wikipedia article of the day for June 17, 2021

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Wikipedia article of the day is Antiochus X Eusebes. Check it out: Article-Link Summary: Antiochus X Eusebes (c. 113 BC – 92 or 88 BC) was a king of Syria during the Hellenistic period. During his lifetime Seleucid Syria was beset by civil wars, interference by Ptolemaic Egypt and incursions by the Parthians. In 95 BC, Seleucus VI killed his own half-uncle Antiochus IX, the father of Antiochus X, who took revenge by defeating Seleucus VI and driving him to his death in 94 BC. Antiochus X did not enjoy a stable reign as he had to fight three of Seleucus VI’s brothers, Antiochus XI, Philip I and Demetrius III. Antiochus XI defeated Antiochus X and expelled him in 93 BC from Antioch, the capital. A few months later, Antiochus X regained his position and killed Antiochus XI. The civil war continued but its final outcome is uncertain. Antiochus X married his stepmother Cleopatra Selene, and had several children with her, including a future king, Antiochus XIII. He probably died fighting against the Parthians in 88 BC.