What is WASP-107b?

WASP-107b is an exoplanet located around 212 light years away from the Earth. Located at extreme proximity to the host star, it is one of the least dense exoplanets to be discovered. It is so light that scientists have nicknamed it as “super-puff” or “cotton candy”. The mass of this exoplanet was found by collecting data from the Keck Observatory in Hawaii and using the radial velocity method – the study of wobbling motion of a planet’s star caused by the planet’s gravitational pull.