Simplify the following text for a Grade 7 native English-speaking person.
Original: In late 1979 , Walt Disney Productions released The Black Hole , a science-fiction film that was the studio 's first production to receive a PG rating ( the company , however , had already distributed its first PG-rated film , Take Downâ '' without the Disney name visibleâ '' almost a year before the release of The Black Hole . )
Simplified: Walt Disney Productions ' film The Black Hole ( 1979 ) was the first Disney movie to get a PG rating .