It is surrounded by a cloud of volatile gas, which blows from the planet of the stellar wind.
An international team of scientists, led by astrophysicists from the University of Geneva, found around a distant exoplanet cloud of inert gas, bloated, like a child’s balloon. Scientists have found that the planet’s atmosphere consists mainly of helium, which blows away the radiation of the star-master.
Planet HAT-P-11b is located at a distance of 124 light years away in the constellation Cygnus, and has the size of Neptune.
“Helium is blown away by the stellar wind from the daylight side of the planet at night at speeds over 10,000 km/h, explains Vincent Berry. This volatile gas forms bloated cloud, very similar to the balloon”.
The upper atmosphere of this planet is 20 times closer to the star-master than the Earth relative to the Sun.
“We hope to find which types of planets characterized by large losses of hydrogen and helium and how long they can retain these gases in the atmosphere,” explains Erica Speak from Exeter University.
Recall that just last year scientists for the first time in the atmosphere of extrasolar planets discovered helium.