Jul 4 1998
From The Space Library
Due to arrive at Mars in October 1999 after a period of orbiting Earth, Japan's Planet B spacecraft launched from [[Kagoshima Space Center] on the southern Japanese island of Kyushu. The Japanese Education Ministry's Institute of Space and Aerospace Science developed the probe, nicknamed Nozomi, or Hope. The probe carried 14 scientific instruments developed by Canada, Germany, Japan, Sweden, and the United States. NASA provided two instruments for the probe: the Neutral Mass Spectrometer, designed to measure the gas composition of Mars's upper atmosphere for the first time; and the Ultra Stable Oscillator, deployed to support a radio science experiment, also involving analysis of the Martian atmosphere, and to guide the spacecraft in its orbit around Mars.
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