Researchers spot planets beyond Milky Way

Researchers spot planets beyond Milky Way
Researchers spot planets beyond Milky Way

For the first time in history, researchers have discovered and identified planets in other galaxies.

The alien planets are located in a distant galaxy 3.8 billion light years away and are estimated to have masses ranging from that of the moon to the Jupiter.

The alien worlds were discovered by a team of astrophysicists using data from Nasa’s Chandra X-ray space telescope. The researchers used a technique called microlensing, which is an astronomical phenomenon and the only method that is currently capable of detecting planets located at great distances from the Earth.

“We are very excited about this discovery. This is the first time anyone has discovered planets outside our galaxy,” Xinyu Dai, a professor of physics and astronomy at the University of Oklahoma, one of the researchers who made the discovery, said in a statement. “These small planets are the best candidate for the signature we observed in this study using the microlensing technique. We analysed the high frequency of the signature by modeling the data to determine the mass.”

Although microlensing has previously been used to hunt for planets in the Milky Way galaxy, the gravitational impact of small space objects can also create signatures, which in turn can be modelled and explained in extragalactic galaxies.

“This is an example of how powerful the techniques of analysis of extragalactic microlensing can be. This galaxy is located 3.8 billion light years away, and there is not the slightest chance of observing these planets directly, not even with the best telescope one can imagine in a science fiction scenario,” said Eduardo Guerras, a postdoctoral researcher at the University of Oklahoma, who was also involved in the discovery of the new planets. “However, we are able to study them, unveil their presence and even have an idea of their masses. This is very cool science.”


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