Simplify the following text for a Grade 7 native English-speaking person.
Original: Leo contains many bright galaxies , Messier 65 , Messier 66 , Messier 95 , Messier 96 , Messier 105 , and NGC 3628 are the most famous , the first two being part of the Leo Triplet .
Simplified: Leo contains many bright galaxies , Messier 65 , Messier 66 , Messier 95 , Messier 96 , Messier 105 , and NGC 3628 are the most famous . The first two are part of the Leo Triplet .