from CNN.com - RSS Channel - World https://cnn.it/2PpcvEE
Thursday, April 25, 2019
'Lighter-than-air' aircraft has first test flight
An innovative aircraft that turns into a "lighter-than-air" balloon to propel itself forward has been flown for the first time.
from CNN.com - RSS Channel - World https://cnn.it/2PpcvEE
from CNN.com - RSS Channel - World https://cnn.it/2PpcvEE
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