That portion of a policy's premium that applies to the expired portion of the policy. Although insurance premiums are often paid in advance, insurers typically earn the premium at an even rate throughout the policy term. More Risk Finance and Captives Information from IRMI.
Explorer 1 became the first successfully launched satellite by the United States when it was sent to space on January 31, 1958. A quick response to the Soviet Union's launch of Sputnik 1, Explorer 1's success marked the beginning of the U.S. Space Age.
History of Manned Spaceflight - Part 1: THE PIONEERS. It was 50 years ago that man first ventured into space. On April 12, 1961, Soviet Cosmonaut Yuri Gagarin orbited the Earth in Vostok 1 (Vostok 3KA-3) on a flight lasting 108 minutes and became the first human being to leave the confines of the Earth's atmosphere.