Russian Progress 77 cargo spacecraft arrives at the ISS marking the end for Pirs

Earlier this week, we mentioned that Russia had launched a resupply spacecraft to the ISS filled with supplies for the space station crew. The mission was Progress 77, and it has arrived at the ISS Pirs docking station on the Russian segment of the spacecraft as of 1:27 AM EST today. Progress 77 arrived at the ISS two days after …