o the waiting port. The massive air door slid closed.

The question was, would the Connie try to set his ship down on the
asteroid? Rip grinned without mirth. Now would be a fine time. His
chronometer showed a minute and a half to blast time.

He took another look at his own situation. He and Santos were getting
close to the asteroid, but there was still over a half mile of Earth
distance to go. They would cover perhaps three-fourths of that distance
before Koa fired the charge.

He had a daring idea. How long could he and Santos last in direct
sunlight? The effect of the sun in the open was powerful enough to
make lead run like water. Their suits could absorb some heat, and the
ventilating system could take care of quite a lot. They might last
as much as three minutes, with luck.

They had to take a risk with the full knowledge that the odds were
against them. But if they didn't take the risk, the blast would push
them outward from the asteroid--into full sunlight. The end result would
be the same.

"We're not going to make it, Santos," he began.

"I know it, sir," Santos replied.

Rip thought anyone with that much coolness and sheer nerve rated some
kind of special treatment. And the young corporal had shown his ability
time and time again. He said, "I should have known you knew, _Sergeant_
Santos. We still have a slight chance. When I give the word, use an air
bottle to push yourself into the sunlight. When I give the word again,
light off your remaining tube."

"Yessir," Santos replied. "Thank you for the promotion. I hope I live to
collect the extra rating."

"Same here," Rip agreed fervently. His eyes were on his chronometer, and
with his free hand he took another air bottle. When the chronometer
registered exactly one minute before blast time, he called, "Now!" He
triggered the bottle and moved from shadow into glaring sunlight. A
slight motion of the bottle turned him so his back was to the sun; then
he used the remaining compressed air to push himself downward along the
edge of shadow. The sun's gravity tugged at him.

He pulled the last tube from his belt and held it ready while he watched
his chronometer creep around. With five seconds to go, he called to
Santos and fired it. Acceleration pushed at him.

In the same moment, the nuclear charge exploded.

CHAPTER SIXTEEN

Ride the Planet!

A mighty hand reached out and shoved Rip, sweeping him through space like
a dust mote. He clutche