W.E.B. DuBois retired in Africa? | Urban Intellectuals

128K views · 3.5K reactions | Something HUGE is unfolding for NASA's James Webb Space Telescope. In a recent test, the spacecraft fully deployed its iconic primary mirror into the same configuration it will have in space. Why this test is key to a successful mission: https://go.nasa.gov/2JLZuTP | NASA - National Aeronautics and Space Administration | Facebook