In a statement, the USPS noted this mission of ensuring security applies to the Cluster Box Units (CBU) as well. “Postal Service guidelines specify that the purchase, ...

Overview of Cluster Box Units. The audit sampled 78 individual CBUs from a total of 14,697 unique CBU addresses served by the Beechnut, Debora Sue Schatz, and T W House Stations in Houston, TX.

June 11–18, 2015: The Black Swallowtail Butterfly Cluster (IC 4665) in Ophiuchus offers small-telescope owners a nice view, while large-telescope owners can seek out the Box Nebula (NGC 6445) in ...

Previous surveys of single galaxy clusters have taken several months using existing instruments, says Carlstrom. “My group has measured about 60 clusters in a decade,” he says.