Photos: America’s 100th EELV blasts off

Two NASA astronauts will take part in the first all-female spacewalk this week, a critical outing to restore lost power in the wake of an equipment failure that cropped up after new batteries were installed in the International Space Station’s solar power system during two earlier spacewalks.

NASA awarded the so-called ‘Lunar Terrain Vehicle Service’ contract and classified it as an “indefinite-delivery/indefinite-quantity, milestone-based LTVS contract with firm-fixed-price task orders.” The agency said it “has a combined maximum potential value of $4.6 billion for all awards.”

A United Launch Alliance Atlas 5 rocket blasted off at 6:18 a.m. EDT (1018 GMT).to deploy the Navy’s fourth MUOS satellite that will expand coverage to encompass the globe with mobile communications.