Complex sentence: On September 13,1985, the United States destroyed US satellite P78-1 using an ASM-135 ASAT anti-satellite missile and malfunctioning US spy satellite USA-193 using a RIM-161 Standard Missile 3 on February 21,2008.
Split into simpler sentences: On September 13,1985, the United States destroyed US satellite P78-1 using an ASM-135 ASAT anti-satellite missile. A year and a month later, USA destroyed a malfunctioning US spy satellite USA-193 using a RIM-161 Standard Missile 3 on February 21,2008.