How to watch first NASA spacewalk of 2019 during International Space Station upgrade NASA will hold its first spacewalk of the year today as two astronauts work to upgrade the International Space Station's power system. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:‘BIOLOGICAL ANNIHILATION’ as scientists warn sixth mass extinction is underwayWhen is NASA going to Mars? Will humans build a base on the red planet?Endangered Rhinos Flee From Indian Floods Into Poachers’ HandsPhoto Essay: A Mausoleum for Endangered SpeciesThe Salty Pink Pools of the YucatánAn Animal Reliquary