There was only one way. When the time came to blast, they would be too close to the sun to take to the boats. The blast had to be set off from the asteroid.
"We'll get underground as far away from the bomb as we can," Rip said. He surveyed the dark side, which was rapidly growing less dark. "I think the second crater will do. Kemp can square it off on the side toward the blast to give us a vertical wall to hide behind."
Koa looked doubtful. "Plenty of radiation left in those holes, sir."
Rip grinned mirthlessly. "Radiation is the least of our problems. I'd rather get an overdose of gamma than get blasted into space."
A yell rang in his helmet. "Here comes the Connie!"
Rip looked up, startled. The Consops cruiser passed directly overhead, about ten miles away. It[pg 184] was decelerating rapidly. Rip wondered why they hadn't spotted it earlier and realized the Connie had come from the direction of the hot side.
The enemy cruiser was probably the same one that had attacked them before. He must have lain in wait for days, keeping between the sun and Terra. That way, the screens wouldn't pick him up, since only a few observatories scanned the sun regularly. To the observatories, the cruiser would have been only a tiny speck, too small to be noticed. Or if they had noticed it, the astronomers probably decided it was just a very tiny sunspot.
The Planeteers worked with increased speed. Kemp welded the final plug into place, then hurried to the crater from which they would set off the charge. Dominico and Dowst connected the wires from the rocket head to a reel of wire and rolled it toward the crater. Nunez got a hand-driven dynamo from the supplies and tested it for use in setting off the charge. Santos stood by the rocket launcher, with Pederson ready to put another rack of rockets into the device when necessary.
Rip and Koa watched the Connie cruiser. It decelerated to a stop for a brief second, then started moving again, with no jets showing.
"That's the sun pulling," Rip said exultantly. "They'll have to keep blasting to maintain position."