FTP, name this terrestrial planet, the closest to the sun.
The ESA mission BepiColombo is scheduled to visit this object and study its interior geology and magnetic field. The precession of this object's orbital periapsis which was originally hypothesized to be caused by an inner object dubbed Vulcan, was later explained by (*) general relativity. The Weird Terrain and Discovery quadrangle lie in the antipodal region to this object's most notable feature, which was first observed during Mariner 10's probing of this planet, and was later fully imaged by MESSENGER. In addition to the Caloris Basin, this planet is noted for having little to no atmosphere due to being blasted nearly constantly by the Solar wind. FTP, name this terrestrial planet, the closest to the sun.
The ESA mission BepiColombo is scheduled to visit this object and study its interior geology and magnetic field.
Mercury