Timbosta

What happened when you started the drill? Did it penetrate the surface, or Did the torque spin Philae away? How much Science did you manage to do compared with what you had hoped to do if it had performed as intended?

I'm surprised that SOFIA is viable, given that the 'scope has to a. track continuously; the vectors must be much more complex than a ground based instrument, b. compensate for atmospheric distortion as well, and c. run on a budget that includes aircraft maintenance, fuel, and flight crew. How can this be?

Thank you for your reply; I hope you have a successful flight.