Philae lander sleeps while scientists wait on its much needed signal The Philae lander initiated by the European Space Agency (ESA) has been missing shortly after landing on comet 67P/ Churyumov-Gerasimenko.
Philae lander sleeps while scientists wait on its much needed signal
![](https://cosmoso.net/wp-content/uploads/2015/02/Philaelandersleepswhilescientistswaitonitsmuchneededsignal.jpg)