The Dhaka Times Desk This is the first time astronomers have seen signs of a planet outside the Milky Way galaxy.
Scientists have identified about 5,000 planets that revolve around the Sun. But all of them have been seen in the Milky Way galaxy. This is the first time that signs of a planet outside the galaxy have been detected.
This possible planet in the Messier 51 galaxy was discovered by NASA's Chandra X-ray telescope. It has also been described as a Whirlpool or Whirlwind Galaxy for its twisted shape.
In fact, the distance of the detected planet from the Milky Way galaxy, the constellation in which we are located, is 28 million light years. That is, at the speed at which light travels, it will take 28 million years to reach this planet.
Scientists say that light is emitted from stars. But when the planet orbits in front of a star, some of that light is blocked and its X-ray diffraction is disrupted. It also gives an idea of the features of the planet in front of it, which can be detected through the telescope. Thousands of planets have already been identified using this method.
Harvard-Smithsonian Center for Astrophysics in Cambridge Dr. "With the methods we're working on, this is the most efficient way to find planets in other galaxies so far," Di Stefano told the media.
Based on the data astronomers have obtained, this possible planet would be similar in size to Saturn. It orbits the black hole, but its distance is about twice the distance from the Sun to Saturn.
But the researchers also admit that they need more data to be absolutely sure.
Scientists have also reported a major problem. Due to its large orbit, it will take about 70 years to come before the star or black hole it is orbiting. For that reason there is currently no way to observe a follow-up to this discovery in the near future.
Scientists have also taken into account that clouds of gas and dust can also cause the diffraction of light to be obstructed. It also prevents X-ray diffraction. Although they think that possibility is very low. The reason is that scientists don't think that the way light emission is reduced is due to a layer of gas.
"We called it exciting and daring," said Julia Berntson of Princeton University, one of the researchers. But we hope that other astronomers will look at it with caution. We have strong arguments in our favor. The way science works, we have done it”.
Source: BBC Bangla.
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