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

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
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.

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.

Copyright 2021 NPR. To see more, visit https://www.npr.org.

Sharon Pruitt-Young

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SOMOS CONNECTICUT es una iniciativa de Connecticut Public, la emisora local de NPR y PBS del estado, que busca elevar nuestras historias latinas y expandir programación que alza y informa nuestras comunidades latinas locales. Visita CTPublic.org/latino para más reportajes y recursos. Para noticias, suscríbase a nuestro boletín informativo en ctpublic.org/newsletters.

The independent journalism and non-commercial programming you rely on every day is in danger.

If you’re reading this, you believe in trusted journalism and in learning without paywalls. You value access to educational content kids love and enriching cultural programming.

Now all of that is at risk.

Federal funding for public media is under threat and if it goes, the impact to our communities will be devastating.

Together, we can defend it. It’s time to protect what matters.

Your voice has protected public media before. Now, it’s needed again. Learn how you can protect the news and programming you depend on.

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