And they couldn't simply fire into the plasma exhaust.

A problem with the plasma exhaust, Travis thought again.

They'd found a ship- a cloaked ship-hiding in the trail of their plasma exhaust.

"That way the plasma exhaust from the reactor can provide electrical power as well as thrust."

Plumes of plasma exhaust were trailing from both of the nacelles.

The plumes of plasma exhaust were last to disappear, but soon even they were slowly fading into space.

The plasma exhaust threw iridescent highlights across the clearing.

I submit that this is not the best time to purge our plasma exhaust.

He was as hard to focus on as the flare of a plasma exhaust.

Grant heard himself say, "What about the plasma exhaust?"