ESA tried to wake Rosetta lander Philae between the 12th and March 20th.
After eight days provide space probe Rosetta up. The comet lander Philae still have not answered the call.
– We are sure that the communication unit on the shuttle works, but we do not know about Philae have received our commands yet, says Koen Geurts, one of the employees in the control room at the German Aerospace Centre Dlr.
– It may be that the lander is already awake but does not have enough power to send a reply, in this case it is possible to Philae can accept commands and execute them.
Rosetta have tried to contact Philae between the 12.e and 20th March. Now, communication is turned off. The next trial expected to take place in early April. Hopefully the lander to wake up when the comet 67P / Churyumov-Gerasimenko moves closer to the sun.
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