Complex sentence: Back in space, the "Enterprise" goes on alert as a Klingon vessel suddenly pulls into orbit with them, however, as the crew watch, a series of strange explosions occur on the Klingon ship that leave it dead in space.
Split into simpler sentences: Back in space, the "Enterprise" goes on alert as a Klingon vessel suddenly pulls into orbit with them. However, as the crew watch, a series of strange explosions occur on the Klingon ship that leave it dead in space.