NASA Discovers Signs of First Planet Outside Milky Way Galaxy

The researchers admit what they have found can be a planet but more data and more study are required to be sure.

By Edited by Gadgets 360 Newsdesk | Updated: 26 October 2021 14:17 IST

NASA Discovers Signs of First Planet Outside Milky Way Galaxy

Photo Credit: NASA/ Chandra X-Ray Observatory

The X-ray observation of the new planet, along with an illustration of how it may look like

Highlights

The planet was observed by NASA's Chandra X-ray telescope
Astronomers were lookring for "dips in optical light" in readings
The new planet is located in Messier 51 galaxy

NASA's Chandra X-ray telescope has found hints of what could be the first planet discovered outside our Milky Way galaxy. The possible signal discovered is located in the Messier 51 galaxy, some 28 million light-years away from Earth. NASA's Chandra Observatory has been designed in such a way that it can detect X-ray emissions from very hot regions such as exploded stars, clusters of galaxies, and matter around black holes. Recently, it detected a characteristic dip in brightness that happens when a planet passes in front of a star and blocks some of its light. This method has helped astronomers discover thousands of “exoplanets” — worlds orbiting stars beyond the Sun.

The research was led by Dr. Rosanne Di Stefano from the Harvard-Smithsonian Center for Astrophysics in Cambridge and her colleagues. Using telescopes — ground- and space-based — the astronomers looked for “dips in optical light, electromagnetic radiation humans can see, enabling the discovery of thousands of planets”, stated a press release.

Because a potential planet is close in size to the X-ray source around the neutron star or black hole, a transiting planet passing along Earth's line of sight could temporarily block most or all of the X-rays. In the recent observation, the transit lasted about three hours, during which the X-ray emission decreased to zero. So, the astronomers estimate the candidate planet would be around the size of Saturn.

Samsung Wins Patent for a Tri-Fold Smartphone With Specialised Barrier Layer for Improved Durability

“The method we developed and employed is the only presently implementable method to discover planetary systems in other galaxies,” Dr Di Stefano, from the Harvard-Smithsonian Center for Astrophysics in Cambridge, US, told BBC News.

NASA Targeting February 2022 to Launch Artemis Moon Mission

The researchers admit what they have found can be a planet but more data and more study is required to be sure. A challenge with that is the candidate planet has a large orbit. It means the object would cross its binary partner again after 70 years. Another possible explanation for the dip in light could be clouds of gas and dust. The researchers considered this explanation but then concluded this was unlikely since other characteristics do not match with such an event.

What's most interesting about Apple's new MacBook Pros, M1 Pro and M1 Max silicon, AirPods (3rd Generation), and Apple Music Voice plan? We discuss this on Orbital, the Gadgets 360 podcast. Orbital is available on Spotify, Gaana, JioSaavn, Google Podcasts, Apple Podcasts, Amazon Music and wherever you get your podcasts.

Affiliate links may be automatically generated - see our ethics statement for details.

Comments

For the latest tech news and reviews, follow Gadgets 360 on X, Facebook, WhatsApp, Threads and Google News. For the latest videos on gadgets and tech, subscribe to our YouTube channel. If you want to know everything about top influencers, follow our in-house Who'sThat360 on Instagram and YouTube.