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Saraswati Supercluster: One of the largest known supercluster

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  What is a Supercluster? A group of galaxies is usually known as a galaxy cluster. When these clusters group together, they form a supercluster. The superclusters are one of the largest structures in the universe. A supercluster contains a large number of galaxies, usually in thousands and millions. Our home galaxy, the Milky Way is a part of a small cluster called the Local Group, which contains more than 54 galaxies. The Local Group is part of the Virgo Supercluster, which is a part of the Laniakea Supercluster. the Laniakea is about 500 million light-years wide. Astronomers estimated that there are more than 10 million superclusters in the observable universe. The empty space between two superclusters is termed void. Introducing the Saraswati: The Saraswati Supercluster was discovered by a group of Indian researchers from Pune and Jamshedpur. The group includes Joydeep Bagchi, Pratik Dabhade, Shishir Sankhyayan, Joe Jacob and Somak Raychaudhury. The Saraswati is the largest supercl

Thorne-Zytkow Object: A Special Hybrid Star

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     In 1974, Polish astrophysicist Anna Zytkow and American physicist Kip Thorne proposed a very unique star. Their research included a special star that is formed when a neutron star is swallowed by a massive red supergiant. This special class of stars is known as the Thorne-Zytkow Object. For many, the theory is just a hypothesis as astronomers are still not sure if they have found any possible stars of this type. In their research paper published in 1975, Thorne and Zytkow suggested that the TZOs (Thorne-Zytkow Objects) will look much similar to a supergiant. The number of young, massive supergiants are very high in our universe. The TZOs would look very similar to a red supergiant, like Betelgeuse, located in constellation Orion. The only difference is that the TZOs are expected to survive 10 times longer than an ordinary red supergiant. Reason for longer survival of the TZOs:      A neutron star is extremely dense compared to a normal star. Red supergiants are old, dying stars wi