On Dec. 15, NASA and its astronauts faced a scary situation when a Russian Soyuz spacecraft docked to the International Space Station sprung a massive coolant leak, shortly before a spacewalk was set to commence by a pair of Russian cosmonauts. The crew on board is safe and not in any immediate danger, but two cosmonauts and one NASA astronaut were supposed to use the Soyuz vehicle to return back to Earth early next year. With the spacecraft’s status in limbo, NASA and Roscosmos...