NASA is considering issuing a challenge for developing stratospheric airships that can break records for duration of flight at high altitudes.
from News and Features - NASA's Jet Propulsion Laboratory http://ift.tt/1uCrIhK
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NASA is considering issuing a challenge for developing stratospheric airships that can break records for duration of flight at high altitudes.
NASA’s IXPE observed the outer rim of the supernova remnant highlighted in purple in the inset. Data from IXPE is combined with data fr...
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