"I don't know," replied Astro. "But I sure wish he was here!"

"Say it again, spaceboy," growled Roger. "Say it again!"

At that moment over fifty-five billion miles away, in his office high in
the Tower of Galileo, Commander Walters was talking with Captain Steve
Strong and Dr. Joan Dale. The stern-faced, gray-haired commander of
Space Academy frowned as he read a report Joan Dale had just given him.

"Are you sure of this, Joan?" he asked.

"I'm positive, Commander," replied the beautiful young doctor of
astrophysics. "The tests are conclusive. There is uranium on Roald!"

[Illustration]

"But I don't understand why it wasn't discovered before this?" mused
Strong. "It's been nearly a year since the first exploratory expedition
out to Roald."

"Samplings of the soil of Roald were taken from all sections of the
satellite, Steve," replied Joan. "On-the-spot tests were made by the
scientists of course, but there were no indications of uranium then. But
cadets majoring in planetary geology tested the soil samples as part of
their training. Several of them reported uranium findings. And I checked
all their examinations carefully, besides making further tests of my
own. That report is the result." She indicated the paper on Walters'
desk.