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China's 1st Mars probe set for October launch
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08:18, June 09, 2009

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Chinese space scientists and engineers are planning to send its first ever Mars probe to orbit in October, and the device is expected to stand the test of nine hours in the freezing, dark shadow of the red planet during its one-year mission.

During the 8.8 hour windows which occur in Yinghuo-1's Mars mission, the solar panel cannot receive any sunlight for generating power, Chen Changya, a researcher with the Shanghai Institute of Satellite Engineering, was quoted as saying, the China Daily reported.

To save energy, part of the facilities on board will have to be switched off, and the probe will restart the facilities when the probe enters into sunshine, the scientist said.

Should anything go wrong, the orbiter could become "frozen" - like the United States' Phoenix Lander, which froze on the surface of Mars.

Chen said he is relieved after the 110-kg micro satellite managed to survive lab tests in February that strictly simulated the Mars environment - 260 C below zero in the dark. His team has spent only 23 months on the satellite design, which typically takes three years.

After passing the research phase, Yinghuo-1 is ready to be transported to Moscow for compatibility tests, and will take off atop a Russian launch vehicle from Baikonur Cosmodrome space base in Kazakhstan in October.

Though China is relying on Russia for the launching, tracking and controlling of the micro-satellite, the Mars probe project is still regarded as a milestone that will take the country one big step further in outer space exploration.

Pang Zhihao, a researcher with the China Academy of Space Technology, said: "If Yinghuo-1 enters the preset orbit smoothly and works well, China will become only the fourth country or region that has ever succeeded in launching a Mars probe, following the United States, Russia and Europe."

Its mission to explore the Martian space environment is also expected to fill in a blank in research, Pang said. Other countries usually focus on looking for signs of life, the weather on Mars and geological research.
Yinghuo-1 is expected to provide clues as to whether the sun turned Mars dry by studying the relationship between oxygen molecules and solar winds.

The probe will carry several cameras, a magnetic field sensor and an ion detector.

The distance between Mars and Earth is between 56.7 million km and 400 million km, depending on their orbital positions. Yinghuo-1 will travel 350 million km over 11 months before entering the planet's orbit, and is expected to send back the first images of the red planet in September next year.

People's Daily Online

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