original: galileo imaged almost all of the surface of metis and put constraints on its composition by 1998 .
simplifications: galileo imaged almost all of the surface of metis and put limits on its contents by 1998 . galileo imaged almost all of the surface of metis and put constraints on its composition by 1998 by 1998 galileo had photographed almost all of metis and limited its composition . galileo imaged almost all of the surface of metis and put limits on its creation by 1998 . galileo drew almost all of the surface of metis and put rules on its composition by 1998 . galileo made an image of almost all of the outside of metis and put restrictions on what it could be made of by 1998 . galileo drew almost all of the surface of metis and put limits on its composition by 1998 . galileo imaged almost all of the surface of metis , puttings limits on its composition by 1998 .