
To address the expected noise levels of future aircraft, NASA’s Commercial Supersonic Technology project is already developing technologies focused on reducing the noise produced by an aircraft’s engine exhaust. via NASA https://ift.tt/2sQ9PG6
This Hubble image shows the spiral galaxy UGC 11397, which resides in the constellation Lyra (The Lyre). via NASA https://ift.tt/oNArYFz
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