scientists have discovered a giant planet outside the solar system that contains a very hot upper layer capable of melting iron.
The International Panel identified glowing water molecules in the stratosphere for a planet outside the solar system called WASP-121b, which is 900 light-years away from Earth.
The stratosphere, one of the main strata of the earth's atmosphere, makes the discovered planet unfeasible because of high enough temperatures for boiling iron, the researchers found.
But this discovery can help identify other worlds where space objects exist.
This is the first time researchers have discovered "hot Jupiter," a class of giant gaseous outer planets, similar in their general structure to Jupiter , with the common feature of most of the planets of the solar system, the stratosphere.
"Our current understanding of the outer planets' atmosphere is very limited and incomplete, so every new piece of information represents an important step forward," said Dr Tom Evans, lead author of the study at Exeter University.
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The atmosphere around the WASP-121b has seemed to pass through a process similar to that on Earth, known as temperature reflection, where heat rises in a place within the atmosphere, providing the necessary "protection" from the sun.
The lower atmosphere above the Earth's surface is divided into two distinct regions, the troposphere and the stratosphere.
The stratosphere contains the ozone layer, which absorbs ultraviolet radiation from the sun, leading to high temperature and reflection.
The layer was found on the discovered planet, using the NASA Hubble Space Telescope, where researchers observed the presence of glowing particles above the surface, indicating a temperature reflection.
Scientists used spectral analysis to study how the brightness of the planet changed, at different wavelengths of light. At high temperatures, water molecules glow in the atmosphere.