The physics department had a comprehensive collection of Lunar rock samples, a sizeable proportion of which comprised specimens from the interiors and vicinities of the young, anomalous craters on Nearside. Under Hunt's persistent coercion, Steinfield agreed to conduct a specially devised series of tests on them. He estimated that he would need a month to complete the work.

Hunt returned to Houston to catch up on developments there and a month later flew back to Omaha. Steinfield's experiments had resulted in a series of computer-generated maps showing anomalous Nearside craters. The craters divided themselves into two classes on the maps: those with characteristic irradiation patterns and those without.

"And another thing," Steinfield informed him. "The first class, those that show the pattern, have also got another thing in common that the second class hasn't got: glasses from the centers were formed by a different process. So now we've got anomalous anomalies on Nearside, too!"

Hunt spent a week in Omaha and then went directly to Washington to talk to a group of government scientists and to study the archives of a department that had ceased to exist more than fifteen years before. He then returned to Omaha once again and showed his findings to Steinfield. Steinfield persuaded the university authorities to allow selected samples from their collection to be loaned to the UNSA Mineralogy and Petrology Laboratories in Pasadena, California, for further testing of an extremely specialized nature, suitable equipment for which existed at only a few establishments in the world.

As a direct consequence of these tests, Caldwell authorized the issue of a top-priority directive to the UNSA bases at Tycho, Crisium, and some other Lunar locations, to conduct specific surveys in the areas of certain selected craters. A month after that, the first samples began arriving at Houston and were forwarded immediately to Pasadena; so were the large numbers of samples collected from deep below the surface of Farside.

The outcome of all this activity was summarized in a memorandum stamped "SECRET' and written on the anniversary of Hunt's first arrival in Houston.

9 September 2028

TO G. Caldwell

Executive Director

Navigation and Communications Division

FROM: Dr. V. Hunt

Section Head

Special Assignment Group L

ANOMALIES OF LUNAR CRATERING

(1) Hemispheric Anomalies

For many years, radical differences have been known to exist between the nature and origins of Lunar Nearside and Farside surface features.

(a) Nearside

Original Lunar surface from 4 billion years ago. Nearly all surface cratering caused by explosive release of kinetic energy by meteorite impacts. Some younger—e.g., Copernicus, 850 million years old.

(b) Farside

Surface comprises large mass of recently added material to average depth circa 300 meters. Craters formed during final phase of this bombardment. Dating of these events coincides with Lunarian presence. Origin of bombardment uncertain.

(2) Nearside Exceptions

Known for approx. the last thirty years that some Nearside craters date from same period as those on Farside. Current theory ascribes them to overshoots from Farside bombardment.

(3) Conclusion From Recent Research at Omaha and Pasadena