A rare clear view of Alaska by MODIS on NASA’s Terra satellite, that most days, is covered by relentless rivers of clouds, obscuring most of the state’s 6,640 miles (10,690 kilometers) of coastline and 586,000 square miles (1,518,000 square kilometers) of land. Image © NASA/Jeff Schmaltz, LANCE MODIS Rapid Response Team, NASA GSFC. Caption: Adam Voiland
The Honeywell ALF 502 engine that was recently used for the NASA Engine Icing Validation test at Glenn’s Propulsion System Laboratory (PSL). This test allows engine manufacturers to simulate flying through the upper atmosphere where large amounts of icing particles can be ingested and cause flame outs or a loss of engine power on aircraft. Image © NASA Bridget R. Caswell (Wyle Information Systems, LLC)
The Twin Rectangular Jet model, installed on the Nozzle Acoustic Test Rig in the Aeroacoustic Propulsion Laboratory at NASA‘s Glenn Research Center. It’s being tested to determine the acoustic impact of engine configurations on low sonic boom plane for the High Speed Project of the Fundamental Aeronautics Program. Image © NASA/Bridget R. Caswell
NASA’s Kepler Planet-Hunting telescope has lost its ability to point toward stars, because one of the reaction wheels that control the telescope’s orientation in space, has failed.
UPDADE: Have a look at this article: How NASA might revive the Kepler planet-hunter