Ultra-high temperature exoplanet WASP-79b could be “iron rain” and have yellow sky

Media BGR reported that there are many different species of exoplanets. Some are cold, some are rocky, warm, and some are weird worlds like WASP-79b. WASP-79b orbits a star about 780 light-years from Earth. In space, this is a relatively short distance, which gives scientists a good understanding of the world.

There are a lot of things that make THE WASP-79b very special. First of all, the exoplanet is very large, and its temperature is very high. Although it orbits so close to the star, its atmosphere is as hot as 3,000 degrees Fahrenheit. In addition, the exoplanet will also have “iron rain.”

WASP-79b, the subject of a research paper published Tuesday in the Astronomical Journal, paints a vivid picture of the planet: a “hot Jupiter” gas giant — and its sky is not as blue as it is on Earth. For reasons that scientists don’t yet know, the planet’s atmosphere doesn’t produce a phenomenon called Riley scattering. In this case, tiny particles capture a specific wavelength of sunlight, and the sky turns blue on clear days. Scientists say that on planets like WASP-79b, the atmosphere does not scatter light in this way, and the sky is likely to be yellow.

“This strongly indicates an unknown atmospheric process that we simply did not consider in the physical model,” Kristin Showalter Sotzen, the study’s lead author, said in a statement. “I showed the wasWASP-79b spectrum to a lot of my colleagues and their consensus was, ‘This is weird.’ “

“Because this is the first time we’ve seen this, we’re really not sure why,” Sotzen added. “We need to keep a close eye on what happens on other planets, because it may indicate an unknown atmospheric process that we don’t yet know about. Since we have only one planet as an example, we don’t know if this is an atmospheric phenomenon related to planetary evolution. “

The planet is twice as massed as Jupiter — and its atmosphere has expanded like a balloon, plus its proximity to the star. Many “hot Jupiter” exoplanets are thought to produce a phenomenon in which steam condenses into “iron rain” and lands on the surface after heat ingests a large amount of iron.