Complex sentence: The craft was launched on April 11,1970, at 13:13 CST from the Kennedy Space Center, Florida, but the lunar landing was aborted after an oxygen tank exploded two days later, crippling the service module upon which the Command Module depended.
Split into simpler sentences: The craft was launched on April 11,1970, at 13:13 CST from the Kennedy Space Center, Florida. The lunar landing was aborted after an oxygen tank exploded two days later, crippling the service module upon which the Command Module depended.