12 February 2009

Not so rare case?

Russian and the United States' satellites have collided. When I first heard that news,  I was surprised. I didn't think, these thing would never realize. But I think, it is not so rare case because there are too many satellites in space.

I'm not expert so my opinion is different from fact. But I think, it is not so rare case. There are many satellites in space. Of course, there are satellites that still in operation and not in operation. Space is large but it is not unlimited. 

Then if many country lift off many satellites every year, the number of these collision will be increase. I think, we must think about these problems too.

Thank you.
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