 In December 2014, the team led by Bin Yang re-observed a binary asteroid system 130 Elektra with the new Extreme AO system SPHERE of the VLT UT4 telescope and detected a smaller and closer satellite not yet seen on previous AO data.Using high imaging capability available on ground-based telescopes equipped with adaptive optics systems, F. Marchis and his team monitor and study the exotic volcanism of Io, Galilean satellite of Jupiter.In February 2001, they witnessed the most energetic eruption ever seen on the solar system.