Planet A Billion Years Younger Than The Big Bang Found.
Messier 4 or M4, also designated NGC 6121, is a globular cluster in the constellation of Scorpius. It was discovered by Philippe Loys de Chéseaux in 1745 and catalogued by Charles Messier in 1764. It was the first globular cluster in which individual stars were resolved. M4 is a rather loosely concentrated cluster of class IX and measures 75 light years across. It features a characteristic “bar” structure across its core. The structure consists of 11th magnitude stars and is approximately 2.5′ long and was first noted by William Herschel in 1783. At least 43 variable stars have been observed within M4. M4 is approximately 7,200 light years away, the same distance as NGC 6397, making these the two closest globular clusters to the Solar System. It has an estimated age of 12.2 billion years.
PSR B1620-26 b is an extrasolar planet located approximately 12,400 light-years away from Earth in the constellation of Scorpius. It bears the unofficial nicknames “Methuselah” and “the Genesis planet” due to its extreme age and a few popular sources refer to this object as “PSR B1620-26 c.” The planet is in a circumbinary orbit around the two stars of PSR B1620-26, which are a pulsar PSR B1620-26 A and a white dwarf WD B1620-26 and is the first circumbinary planet ever confirmed. It is also the first planet found in a globular cluster. The planet is one of the oldest known extrasolar planets, believed to be about 12.7 billion years old.
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