A Planet Outside our Galaxy may have been Discovered

A Planet Outside our Galaxy may have been Discovered

By George Makeri

Scientist may have discovered a planet Outside our Milky Way Galaxy. This could bring a whole new frontiers into our understanding of our universe as this marks the first of such discovery. According to NASA, scientists have, from early 1990s to date, discovered more than 4000 exoplanets (a term used for planets outside our Solar System), but none of these over 4000 previously discovered exoplanets are outside our galaxy, the Milky Way. This newly discovered exoplanet however, is the first to be discovered outside our galaxy. It is believed to belong to the Whirlpool Galaxy and about 28 million light years away from our Earth. Signs of a planet is detected through a concept astronomers term ‘transit’. A transit is the blocking of light from a star whenever a planet passes by.NASA made this announcement on Monday that astronomers, using the Chandra X-ray observatory telescope, detected a planet outside of our Milky Way Galaxy for the first time in history. This discovery could take decades to confirm its authenticity, given the fact that revolution of planets about a star takes time. Our Earth takes 365 days to complete one revolution.This newly discovered exoplanet is believed to have the same size as Saturn in our solar system. It is also believed to revolve away from its star, twice the distance Saturn revolves away from the sun.Rosanne Di Stefano, a physicist with the Harvard & Smithsonian Center for Astrophysics, said in an announcement from NASA, “We are trying to open up a whole new arena for finding other worlds by searching for planet candidates at X-ray wavelengths, a strategy that makes it possible to discover them in other galaxies.”

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