Buzz Aldrin on July 20, Aldrin and Armstrong entered "Eagle", and began the final preparations for lunar descent. At 17:44:00 "Eagle" separated from the "Columbia". Collins, alone aboard "Columbia", inspected "Eagle" as it pirouetted before him to ensure the craft was not damaged, and that the landing gear was correctly deployed. Throughout the descent, Aldrin called out navigation data to Armstrong, who was busy piloting the "Eagle". Five minutes into the descent burn, and above the surface of the Moon, the LM guidance computer (LGC) distracted the crew with the first of several unexpected alarms that indicated that it could not complete
Celebrate the Century September 1999. Denomination: 33¢ No of stamps in sheet: 15 The stamps: Background image: Astronaut Buzz Aldrin sets up seismic equipment to record lunar tremors. Intaglio stamp: Buzz Aldrin's . Title: "Bicentennial, Watergate, and Earth Day". Date of issue: 18 November 1999. Denomination: 33¢ No of stamps in sheet: 15 The stamps: Background image: Ships gather in New York Harbor under the Statue of Liberty to take part in Bicentennial celebrations, July 4, 1976, marked the 200th birthday of the United States. Intaglio stamp: Videocassette recorder. On the occasion of the unveiling of the Boeing 747 stamp by the USPS,