| Detail | ： | NGC 6822 is an irregular galaxy located toward the constellation Sagittarius. It is in our galactic neighborhood; our Milky Way Galaxy and NGC 6822 are in the same group of galaxies called the Local Group. NGC 6822 is also known as Barnard’s Galaxy because E. E. Barnard, an American astronomer, discovered it. Many red glowing spots are observable in the galaxy. These are massive star-forming regions similar to the Orion Nebula (M42) in our Milky Way. Massive newborn stars ionize surrounding hydrogen gas with their ultraviolet light, and the ionized gas emits a red glow. This image was released in the HSC Legacy Archive (HSCLA), a brand-new science archive from Hyper Suprime-Cam (HSC) launched in 2021. Scientists worldwide can use processed, science-ready data from open-use programs through HSCLA for their research. (Credit: NAOJ; Image provided by Masayuki Tanaka) 【Distance from Earth】160 million light-years 【Instrument】 Hyper Suprime-Cam (HSC) |
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