Photos: Delta 4 lights up the sky for night owl launch

The Global Positioning System, its precision navigation and timing services made possible by the U.S. Air Force and provided free-of-charge to the planet’s civilian population, is a marvel of the modern world, and the orbiting network will receive a fresh satellite Wednesday.

All NASA centers and facilities will begin a mandatory telework policy for agency and contractor employees effective immediately, except for “mission-essential” personnel, to combat the threat from the coronavirus pandemic, officials announced Tuesday.

Rolling toward a mid-May deployment of a clandestine spy satellite, United Launch Alliance’s triple-body Delta 4-Heavy rocket moved from its Cape Canaveral assembly building to pad 37B yesterday.