Q&A with Mark Mulqueen, Boeing’s space station program manager

Signs that a launch to the International Space Station is approaching are obvious this week at Cape Canaveral, with the Atlas 5 booster rocket beginning to take shape and the commercial resupply ship heading to its propellant depot.

Expedition 49 commander Anatoly Ivanishin of the Russian Federal Space Agency, NASA astronaut Kate Rubins and Takuya Onishi of the Japan Aerospace Exploration Agency undock from the International Space Station aboard the Soyuz MS-01 capsule for return to Earth.

NASA fired up four hydrogen-fueled main engines on the core stage of the first Space Launch System heavy-lift rocket Thursday in on a test stand in Mississippi, a redo of a crucial hot fire test that was cut short in January by technical issues. The engines burned more than eight minutes in an apparently successful test.