The new approximation
of the amount of water ice led to radar Mini-RF, on board the American
"moon" of the probe LRO. The focus, as in many similar studies,
focused on the Moon's south pole, where the deep crater Shackleton . These
places are the most promising for the construction of this permanent manned
base on the edge of the crater found a lovely flat landing area, and located
very near to the "peak of eternal light", where the sun shines
constantly, it would be convenient to install solar panels.
Earlier, the
Japanese with his probe Kaguya carried out extensive surveying and found no
glare, which could indicate the presence of ice here (read: " Dry Moon
"). However, more detailed studies LRO give a very different picture - on
recent data, the ice on the slopes of the crater can be 5-10%. These data
appear to be more reliable: they are not only in good agreement with the
current knowledge of the presence of water on the moon, but also obtained using
more advanced methods, because the radio signal, in contrast to conventional
photography, is able to "consider" the ice and under a layer of dust.
The interior of
the crater Shackleton remains in perpetual shadow, and the temperature is cold
enough that the ice did not melt in it ever. Such assumptions about the
"dark" polar craters of the moon were expressed more than once. Even
before the analysis of the reflected neutrons showed that the amount of
hydrogen closer to the poles of the satellite rises and the average water
content corresponding to them in these areas could reach 1.5% by weight of the
surface of the soil. Traces of ice were found in the study of the composition
of the debris and dust that lifted probe LCROSS, controlled collided with the
moon near its south pole. But the Indian probe Chandrayaan-1 similar data obtained in the study is the
North Pole. Now they are confirmed by the new research.
Measurements
were carried out in 2009-2010.: Board radar device sends a signal to areas
covered by the shadow of the crater Shackleton, and the polarization of the
return beam, scientists were able to judge the presence of ice. This beam can
penetrate the surface to a depth of one meter, or even two, so - to find the
ice, even if it is covered with centuries-old layer of dust. It happened in
this case. We can say the place is ready - it is time to do the construction of
the base?
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