Scientists may have found a planet outside of the Milky Way galaxy for the first time


    Scientists may have found a planet outside of the Milky Way galaxy for the first time

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    In this 30 second exposure, a meteor streaks across the sky during the annual Perseid meteor shower on Aug. 10, 2021, in Spruce Knob, West Virginia.

    NASA/NASA via Getty Images

    NASA/NASA via Getty Images

    We may be one step closer to understanding the unknown parts of our universe.

    Astronomers using NASA’s Chandra X-ray Observatory telescope have detected what appears to be a planet in a galaxy beyond the Milky Way for the first time in history, NASA announced on Monday.

    The unnamed exoplanet — the name for a planet that exists in a solar system outside of our own — is believed to exist in the in the M51, or “Whirlpool” galaxy, around 28 million light-years from Earth, NASA said.

    The possible planet is as big as Saturn

    Not much is known about the potential planet, but it’s believed to be around the same size as Saturn and orbiting its version of the sun at around double the distance of Saturn from our sun, according to scientists.

    Researchers spotted signs of the exoplanet by observing what is known in astronomy as a transit — a transit is when a planet passes in front of a star and blocks light from the star. Looking through advanced telescopes, astronomers were able to watch for a “characteristic dip” that comes with a transit, according to NASA.

    This method is among those that have been used to discover numerous confirmed and potential planets outside of our solar system. Since the 1990s, astronomers have discovered more than 4,000 exoplanets, according to NASA. But all of those were found in our Milky Way galaxy.

    It could be decades before scientists can confirm the discovery

    As exciting as the idea of other planets existing outside of our galaxy is, NASA said more research is required to confirm the existence of the exoplanet. And that’s no easy feat: the unnamed planet is believed to have such a hefty orbital distance that it would not pass in front of its neutron star or black hole for another 70 or so years, according to the release.

    Still, the potential discovery could be interpreted as a beacon of hope for those looking for signs of planets beyond our own galaxy.

    “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,” Rosanne Di Stefano, a physicist with the Harvard & Smithsonian Center for Astrophysics, said in an announcement from NASA.

    Published at Tue, 26 Oct 2021 16:17:35 +0000

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