Super-hot Exoplanet WASP-79b Presents Yellow Skies And Clouds That Rain Iron

The WASP-79b is a super-hot exoplanet the size of Jupiter that is currently analyzed with the help of the Hubble Space Telescope and the Magellan II Telescope in Chile. The giant orbits around a star that is even brighter and hotter than our Sun, being positioned at around 780 light-years away for our planet.

WASP-79 exoplanet has scattered clouds that rain iron

WASP-79b is part of the Eridanus constellation, being amongst the most significant exoplanets ever observed by the scientists. The results of the initial research can be found in the Astronomical Journal, the January 2020 edition.

The planet is capable of completing an entire orbit around the Sun in just three days and a half. Its formation and evolution are against any theory that was ever discovered by the scientists. This is why the results of this study are highly probable to offer more exciting details about the inner workings of hot Jupiters.

This type of planets can either present a cloudy atmosphere or clear skies and WASP-79b displays an impressive amount of iron at high altitudes that could result in rain.

New research on the WASP-79b super-hot exoplanet

Recent evidence is showing that the atmosphere of this planet does not present the Rayleigh scattering that is responsible for creating the blue appearance of the sky on our planet. Instead, WASP-79b’s sky is slightly yellowish during the daytime.

This is the first time that the researchers encounter this characteristic in an exoplanet, and this is why the primary objective of the researchers is to spot other planets having similar features to help them get a proper insight into this weird characteristic.

The research was conducted with the help of a spectrograph, specially designed to analyze the wavelengths emitted by light and their chemical composition. Initially, the researchers were expecting a decrease in the blue starlight caused by the lack of Rayleigh scattering. However, the results showed the opposite, and the blue wavelengths appear less transparent than usual on the super-hot exoplanet WASP-79b.

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