Astronomers from Trinity College Dublin Used the space telescope to them. James Webb, in order to study in detail the atmosphere of a hot planet that does not have a star-SIMP-0136. Such planets are called "orphans", "outcasts" or "wandering."

SIMP-0136 is a brown dwarf at a distance of about 20 light years from the Sun., something between a star and a planet, different researchers attribute them closer to one or another category of cosmic objects.

The high sensitivity of the telescope instruments allowed researchers to fix the barely noticeable changes in the brightness of the planet in the process of its rotation. This made it possible to determine fluctuations in temperature, composition and cloudiness in the atmosphere.

Suddenly, the observations revealed strong auroral activity on the SIMP-0136-an analogue of the northern radiance on Earth and the powerful polar radiance of Jupiter-which additionally heats the upper layers of the atmosphere.

“These are one of the most accurate measurements of the atmosphere of any object outside the solar system today and the first time when changes in the properties of the atmosphere have been measured directly,” said Dr. Evert Syedkin, a researcher at the Trinity College Physics School, the leading author of the article, published in Astronomy & Astrophysics.

The temperature of the SIMP-0136 exceeds 1500 ° C, the researchers were able to register temperatures at 5 ° C. These small fluctuations correlated with changes in the chemical composition, which indicates the existence of stormy regions similar to the large red spot of Jupiter.

Another unexpected conclusion - relatively low clouds On the surface of SIMP-0136. At the same time, cloud cover covers the surface of the planet constantly.

It is worth noting that the "clouds" on this hot planet are not like earthly; They are not from water, but from silicate particles - In fact, from the smallest grains of sand formed at high temperatures.

Detailed modeling made it possible to extract more information about the temperature and chemical variations of the atmosphere.

“The different lengths of the waves of light are associated with various atmospheric characteristics. Just as the surface of the Earth’s surface changes, the spectral changes in the SIMP-0136 are caused by changes in the atmosphere, ”Dr. Sysedkin explained.

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