Lowell (Martian crater) Lowell (Martian crater) The Lowell Crater is a large impact crater on Aonia Terra in the Thaumasia quadrangle of Mars. The crater is about 203 kilometers (127 miles) in diameter. Lowell Crater has a ring of mountains on its floor which gives it a sort of bull's eye appearance. Its nearby features include the craters Slipher to the north, Douglass to the east, and Coblentz to the southwest, the small mountain Aonia Mons to the west, and Aonia Planum to the southeast. Lowell Crater is named for Percival Lowell who built the Lowell Observatory in Flagstaff, Arizona, in 1894, and
Lowell Frazer Lowell Frazer Dr. Lowell K. (Jim) Frazer was a mathematician who worked for the National Security Agency (NSA) in the field of cryptography. "Dr. Lowell K. ("Jim") Frazer founded modern cryptographic evaluation for the US government. As a result of his efforts, all cryptography used for classified applications by the U.S. Department of Defense and Intelligence Community is now subject to rigorous scientific evaluation. He influenced the design of most U.S. cryptographic systems fielded prior to 1990. In addition, Dr. Frazer was a prolific writer of technical papers. He was selected as the first Communications Security (COMSEC) mathematician assigned as