Simplify the following text for a Grade 9 native English-speaking person.
Original: Siarnaq displays light-red colors and the infrared spectrum very similar to Paaliaq and Kiviuq , supporting the thesis of a possible common origin in the break-up of a larger body .
Simplified: Siarnaq has light-red colors very similar to Paaliaq and Kiviuq , supporting that the moons formed during a break up of a bigger body .