10年
人生有几个十年？
听说光波要7分钟到地球
回到N年前
光是波吗？
Sent from my iPhone
Begin forwarded message:
Date: November 13, 2014 at 12:15:59 AM GMT+8
Subject: CNN Breaking News
The European Space Agency's Philae probe landed today on Comet 67P, the agency says, the first time in history a spacecraft has made a soft landing on a comet.
About seven hours earlier, the lander had separated from the mother ship Rosetta to begin its descent to the comet, which is is 500 million kilometers (310 million miles) from Earth.
The mission was launched 10 years ago.
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