San Francisco — In 2014, Google and Facebook vied to acquire Titan Aerospace, a maker of high-altitude, solar-powered drones. Google won the bidding, so Facebook purchased its own company, which was building a huge glider, Aquila. The idea was to beam internet access from the sky to get more people logging on from remote places to access information and probably use both companies’ web services. That soaring vision has come down to Earth with a bump. On Wednesday, a spokeswoman from Google parent Alphabet’s X research lab said it had shut down Titan. This happened in early 2016, she said, although confirmation did not come until Thursday, when technology blog 9to5Google reported the move. The team from Titan was brought into X in late 2015, and the research lab ended its exploration of high-altitude drones for internet access shortly thereafter, the X spokeswoman said. Facebook has also struggled. Its Aquila drone crashed during a test flight in June, sparking an investigation by th...

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