Simplify the following text for a Grade 8 native English-speaking person.
Original: At times , the orbiter itself is referred to as the Space Shuttle . Technically , this is a slight misnomer , as the actual `` Space Transportation System '' ( Space Shuttle ) is the combination of the orbiter , the external tank , and the two solid rocket boosters .
Simplified: The Space Shuttle consists of 3 parts , the orbiter , external fuel tank and solid rocket boosters .