Astronomers detected the evidence of quartz nanocrystals in the high-altitude clouds of the exoplanet WASP-17b.
WASP-17b is a “hot Jupiter” exoplanet about 1,300 light-years away from our planet.
The detection is the first time that silica particles have been detected in the atmosphere of an exoplanets.
Silicates are minerals rich in silicon and oxygen and they make up a bulk of Earth and the Moon’s mass, as well as other rocky objects in the solar system.
They are extremely common across the galaxy.
But the silicate grains that were detected so far in the atmospheres of exoplanets and brown dwarfs seemed to be made of magnesium-rich silicates like olivine and pyroxene.