(Encyclopedia) radar astronomy, application of radar to the determination of distances and planetary features within the solar system, such as rotation rates. A short burst of radio waves is…
(Encyclopedia) Halsey, William Frederick, Jr. (Bull Halsey)Halsey, William Frederick, Jr.hôlˈsē [key], 1882–1959, American admiral, b. Elizabeth, N.J., grad. Annapolis, 1904. In World War II he led (…
(Encyclopedia) Hipparchus, fl. 2d cent. b.c., Greek astronomer, b. Nicaea, Bithynia. He is the first systematic astronomer of whom there are records. He made his observations chiefly on the island of…
THE BIRTH OF THE SOLAR SYSTEMPLANETSMOONSOur tiny corner of the Universe is dominated by a star we call the Sun. Trapped in the gravity of the Sun is a huge family of bodies – PLANETS…
(Encyclopedia)
CE5
Moon mission assembly
CE5
Stages in a moon mission shown counterclockwise from launching on the first day to splashdown on the ninth day.
space exploration, the…
