Simplify the following text for a Grade 8 native English-speaking person.
Original: Because the moon is small and dark , it was not seen in the heavily scrutinized images taken by Voyager 2 during its Uranus flyby in 1986 .
Simplified: Because the moon is small and dark , it was not seen in the images taken by Voyager 2 during its Uranus flyby in 1986 .