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Scientists have discovered for the first time an area where moons form around a planet outside our solar system, a Jupiter-like formation surrounded by a huge halo of gas and dust, enough to give birth to three moons the size of our own. according to what was published Thursday in the Astrophysical Journal Letters.
The researchers used the ALMA telescope in Chile’s Atacama Desert to observe the disk, which contains material that accumulates in vortex-like motion around one of two newborn planets orbiting a relatively close-range young star called BDS. turning 70. Earth is 370 light-years away. A light-year corresponds to a distance of about 9.5 trillion kilometers.
From these halos or disks that surround the planets, moons are born. The researchers commented on the discovery, saying it allows a deeper understanding of the early life formation process for planets and moons.
More than 4,400 planets have been discovered outside our solar system, but no disks have been found around the planets yet, as all of them are in mature solar systems, except for two newborn gas planets around the star “BDS 70”.
“These observations are unique and we have waited a long time to put the theory of planet formation to the test and to track the birth of planets and their moons as they occur,” said astronomer Myriam Benniste of the University of Grenoble, who conducted the research. led.
The orange star (BDS 70) has about the same mass as the Sun and is about 5 million light-years old, which is the twinkling of an eye in cosmic time, and the two planets are younger than it.
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