NASAのインスタグラム(nasa) - 7月3日 23時01分

Galaxy 2XMM J143450.5+033843's name is not a random jumble of numbers and letters. This galaxy, imaged by the Hubble Space Telescope, was detected and observed as part of the second X-ray sky survey performed by the XMM-Newton Observatory. Its celestial coordinates form the rest of the bulky name, following the “J”: a right ascension value of 14h (hours) 34m (minutes) 50.5s (seconds). This can be likened to terrestrial longitude.

It also has a declination of +03d (degrees) 38m (minutes) 43s (seconds). Declination can be likened to terrestrial latitude.

This galaxy lies nearly 400 million light-years away from Earth. It is a Seyfert galaxy that is dominated by something known as an Active Galactic Nucleus – meaning its core is thought to contain a supermassive black hole that is emitting huge amounts of radiation, pouring energetic X-rays out into the Universe.

Credit: NASA/ESA/Hubble

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