A rocky exoplanet located 26 light-years away from Earth, which orbits a star, has been found to have water vapour by the James Webb Space Telescope. Astronomers are now trying to determine whether the presence of water vapour indicates the existence of an atmosphere around the rocky exoplanet, which would be the first-known case. In the universe, small, cool red dwarf stars are the most common, and the exoplanets found in the "habitable zone" are often located close to red dwarfs since they are not as warm as the sun and provide warmth to the planet's surface. Ultraviolet and X-ray radiation emitted by red dwarf stars can be intense enough to strip the tenuous gas layers around planets, raising doubts about the ability of these rocky planets to hold onto their atmospheres. Recently, scientists have used the Webb telescope to study an exoplanet called GJ 486 b, which is a hot, rocky planet about 30% larger than Earth with much higher surface gravity.
© Copyright 2023. All Rights Reserved Powered by Vygr Media.
