Astronomers have just spotted a mysterious, ghost-like galaxy that disappeared for nearly a century, only to reappear in 2021. The galaxy, known as AGC198691, was first discovered by American astronomer Harlow Shapley in 1923. Since then, it has been a mystery as to its whereabouts until now. By using the powerful James Webb Space Telescope (JWST), astronomers have been able to find the galaxy and map its structure. What they found was quite remarkable - the galaxy is composed of vast amounts of dust, stars, and gas, with a mass estimated to be around 3 million times the mass of our Sun. The astronomers believe that this galaxy may have been formed by the collision of two other galaxies in the distant past, which would explain its unique structure. What’s more, AGC198691 is located about one billion light years away, making it one of the most distant galaxies known. This is an amazing discovery, and further study of AGC198691 may provide invaluable insights into the formation and evolution of galaxies in the universe.

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source: Phys.org