DARPA estimates using an unmanned vessel instead of a similarly-sized manned one will be save an order of magnitude on the cost of daily operation.
SOURCEs Popular Science
Brian Wang is a Futurist Thought Leader and a popular Science blogger with 1 million readers per month. His blog Nextbigfuture.com is ranked #1 Science News Blog. It covers many disruptive technology and trends including Space, Robotics, Artificial Intelligence, Medicine, Anti-aging Biotechnology, and Nanotechnology.
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