George Nield
U.S. Senator Barbara A. Mikulski (D-Md.) speaks at an event to commemorate the 25th anniversary of the Hubble Space Telescope,  April 21, 2015 at the Capitol Hill Visitor Center. Credit: NASA/Aubrey Gemignani
The NRO's classified NROL-67 mission launched in 2014 aboard a United Launch Alliance Atlas 5 rocket.
Orbital ATK JPSS
The U.S. Air Force's  upcoming fifth and sixth satellites in its missile warning constellation will have a new satellite bus. CREDIT: Lockheed Martin.
John Culberson
Landsat 8
NASA Administrator Charles Bolden
John Culberson
Ana landfall
Donna Edwards
JWST mirror segments. Credit: NASA

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