In an update provided several hours after the April 28 launch, NASA said the Progress was also experiencing problems with its onboard propulsion, and had entered into a slow roll. Credit: NASA video grab
JPSS-1 undergoing testing
An artist's concept of Arabsat 6-A and Hellas-Sat-4/SaudiGeoSat-1. Credit: Lockheed Martin
Dava Newman speaking at an MIT event in October 2014. Credit: MIT Parents Association via Flickr
A SpaceX Falcon 9 rocket lifting off April 27 carrying Turkmenistan's first satellite, the Thales Alenia Space-built TurkmenAlem52E MonacoSat satellite. Credit: SpaceX video screenshot
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
U.S. Rep. Mac Thronberry
Sentinel Telescope
Boeing 702HP satellite
Merlin methane-monitoring satellite
SBIRS GEO 1
An Ariane 5 carrying the Sicral 2 and Thor 7 satellites lifts off April 26 from Kourou. Credit: Arianespace
Lt. Gen. Ellen Pawlikowski, the military deputy to the assistant secretary of the Air Force for acquisition, speaking April 15 at a breakfast at the 31st Space Symposium. Credit: Tom Kimmell
us_capitol_nasa_web_12.15.141-757x485
An X-37B undergoes inspection after landing at Vandenberg Air Force Base, California. Credit: USAF
John Shannon (seated, left) watches the launch of the Space Shuttle Endeavour in March 2008. Credit: NASA/Bill Ingals

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