Mission Type: Orbiter Launch Vehicle: Thor-Delta E-1 (no. 50 /
Thor no. 488 / DSV-3E) Launch Site: Eastern Test Range / launch
complex 17B, Cape Canaveral, USA NASA Center: Goddard Space
Flight Center Spacecraft Mass: 104.3 kg at launch Spacecraft
Instruments: 1) magnetometers; 2) thermal ion detector; 3) ion
chambers and Geiger tubes; 4) Geiger tubes and p-on-n junction;
5) micrometeoroid detector; and 6) Faraday cup Deep Space
Chronicle: A Chronology of Deep Space and Planetary Probes
1958-2000, Monographs in Aerospace History No. 24, by Asif A.
Siddiqi National Space Science Data Center,
http://nssdc.gsfc.nasa.gov/ Solar System Log by Andrew Wilson,
published 1987 by Jane's Publishing Co. Ltd. Explorer 35 was
designed to study interplanetary space phenomena-particularly
the solar wind, the interplanetary magnetic field, dust
distribution near the Moon, the lunar gravitational field, the
weak lunar ionosphere, and the radiation environment. The
spacecraft left Earth on a direct ascent trajectory and entered