The whine of the mighty pumps began to fill the ship almost as quickly as Astro acknowledged the order.
"Feed reactant!" snapped Strong, strapping himself in beside Tom.
A low-muted hiss joined the sound of the whining pumps as Tom opened the valves. "Reactant feeding at D-9 rate, sir," he reported.
"Roger," called Strong into the intercom, "do we have a clear trajectory?"
"Clear as space, skipper!" was Roger's breezy answer.
"All right, Tom," said Strong, "cut in take-off gyros."
The cadet closed the master switch on the control panel and the noise from the power deck below began to build to an unbearable crescendo!
Watching the sweeping second hand of the chronometer, Tom called out, "Blast off minus five—four—three—two—one—zero!"
With a mighty roar, all main rockets of the spaceship exploded into life. Shuddering under the sudden surge of power, the ship rose from the ground, accelerated at the rate of seven miles per second, and arrowed into the sky, space-borne!
On the Academy spaceport, ships of Squadron L began to blast off one by one behind the Polaris at ten-second intervals. Three rocket cruisers, six destroyers, and twelve rocket scouts. The explosive blast of one hardly rolling away across the surrounding hills before another deafening blast lifted the next space vessel away from Earth.