Original sentence: Deep Impact is an ongoing NASA space probe launched on January 12, 2005 that was designed to study the composition of the interior of the comet 9P/Tempel (old-style name "P/Tempel 1") by colliding a section of the spacecraft into the comet
Edited sentence: Deep Impact is an ongoing NASA space probe launched on January 12, 2005 that was designed to study the composition of the interior of the comet 9P/Tempel by colliding a section of the spacecraft into the comet