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Astronomers see a gas cylinder spinning on a planet outside the solar system
Thursday – 12 Dhu al-Hijjah 1442 AH – 22 July 2021 AD
A picture taken by the ALMA telescope (Reuters)
Paris: «Middle East Online»
For the first time, astronomers have clearly observed a cylinder of gas and dust swirling around a planet outside our solar system, in a discovery that will help verify hypotheses of planet and moon formation.
This conclusion is the result of research launched in 2018 following the discovery of BDS 70b, a young planet in formation near the star BDS 70. Its system is very close to ours at a distance of 370 light-years in the constellation. Centaurus.
And in 2019, astronomers first discovered a cylinder of gas and dust orbiting another planet, BDS 70C, which was discovered by the European Southern Observatory’s Very Large Telescope.
By comparing these data with those obtained by the “ALMA” radio telescope, the scientists came to the hypothesis that this cylinder allows the formation of moons around the planet “BDS 70C”.
New data collected by “ALMA” allowed a clear observation of a cylinder in which satellites could be formed, according to Myriam Benesti, an astronomer at the University of Grenoble, France, and the lead author of a study on the subject, details of which were published today. , Thursday, published in the “The Astrophysical Journal Letter.”
Scientists have known since 2006 that the star BDS 70 is illuminated by a huge cylinder of material, but the presence of at least one planet between the star and the cylinder was only an assumption due to the limitations of their instruments.
Planets form in cylinders of dust and gas that weigh young stars. It is also possible that it is surrounded by a cylinder of dust and gas that feeds its formation. Within this circle, moons can form in the orbits of the gas giant planets.
The two discovered planets are of great importance because they belong to a young group. Their star, Ruby DS 70, is about 5.4 million years old, compared to more than 4.6 billion years for our sun.
And they’re the only two planets outside our solar system yet to form, explains Miriam Kepler, a researcher at the Max Planck Institute for Astronomy who helped prepare this study and discovered YDS 70b in 2018.
However, more research is needed and more accurate tools are being developed to investigate this path of formation.
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