الوضع الليلي
12:29:21 
2023-06-21 
917
An international team of astronomers has announced that they have conducted a detailed study of a giant exoplanet hot enough to vaporize rocks and rain down molten iron.
Planet WASP-76 b orbits the massive star WASP-76, which is about 634 light-years away in the direction of the constellation Pisces.
WASP-76 b orbits very close to its parent star, about 12 times closer than the planet Mercury to the Sun.
The planet has a mass similar to that of Jupiter, but it is six times more massive.
Astronomers took a deeper look at the exoplanet, where temperatures soar to around 2,400 degrees Celsius (4,350 degrees Fahrenheit), hot enough to vaporize iron. In the process, the team identified 11 chemical elements in the planet's atmosphere and measured their abundance.
It is remarkable that some of the constituent elements of the rocks discovered on this distant planet have not yet been measured in the gas giants of the solar system, Saturn and Jupiter.
"There are rarely times when an exoplanet hundreds of light-years away can teach us something potentially impossible to know about our solar system," said Stéphane Pelletier, team leader from the University of Montreal's Trottier Institute for Exoplanet Research, in a statement. It is the case with this study."
WASP-76 b is classified as a "hot Jupiter", when a massive planet is found incredibly close to its star. This gives WASP-76 b, which takes 1.8 Earth days to orbit its star, some other unusual properties.
In a 2020 paper published in the journal Nature, astronomers suggested that there might be molten iron falling on one side of the planet, which is permanently opposite the host star, known as orbital locking or tidal restriction (with a permanent day side and a permanent night side). .
This means that the perpetual night side of the planet is constantly hot, while the other (perpetual day) side is much cooler.
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