Discovery is on orbit to international space station . Discovery is carrying supplies , back to the space station . Three women planned during 13-day mission . The launch comes three days after Russian spacecraft Soyuz TMA-18 , carrying Dyson and Russian cosmonauts Alexander Skvortsov and Mikhail Kornienko , blasted off to the International Space Station from a Kazakhstan facility . Marks first time four women have been in space at one time .
Discovery is on orbit to international space station . Discovery is carrying supplies , back to the space station . Three women planned during 13-day mission . Marks first time four women have been in space at one time .