Chang'e I, China's pioneering lunar probing
satellite, came through its first lunar eclipse yesterday and has
regained full operations.
The moon orbiter was temporarily hidden from solar rays and lost
contact with Earth for two-and-half hours during a blackout that
started at 10 am, Ye Peijian, chief commander and designer in
charge of the satellite system, said.
Chang'e I had to switch off some of its equipment and rely on
onboard batteries during this challenging time, when it was blocked
from solar energy, Ye said.
Full details of how Chang'e I performed during the eclipse were
due to be released last night.
Gu Shen, a deputy director with the lunar probe's measurement
and control system, said scientists adjusted the orbit of the
satellite and shortened the time the probe was out of direct
sunlight by about 80 minutes.
As of 10 pm Wednesday, the satellite had completed 1,204 orbits
of the moon. Prior to yesterday's eclipse, the longest time Chang'e
I had been without contact with the Earth was 49 minutes.
The European Space Agency helped monitor the satellite, which
will perform a second orbital adjustment during another eclipse in
August, Ye said.
Chang'e I, which blasted off from the Xichang Satellite Launch
Center in Sichuan province atop a Long March 3A rocket, is designed
to produce a three-dimensional survey of the lunar surface.
The 2,350-kg satellite will also analyze the abundance and
distribution of elements on the moon's surface, investigate the
characteristics of the powdery soil layer on the surface, and
explore the environment between the Earth and the moon.
Ye also said yesterday that China plans to launch Chang'e II
some time around 2009.
(China Daily February 22, 2008)