The satellite is one facet of Zuckerberg's Internet.org initiative, which aims to give everyone affordable access to basic Internet services.
Positive Train Control systems use satellite and computer data to monitor trains and prevent them from going too fast.
Broadcast will go out live to ships, aircraft carriers and submarines.
Before and after satellite maps show Boko Haram's horrific campaign of terror.
More than 10,000 volunteers sifted through high-resolution images of Mongolia taken by orbital satellites to locate potential sites.
Although tracking aircraft by satellite has been cited as a top priority, no deadline has been set for its implementation.
More than 3 billion people who live without Internet access could get instant broadband.
A fast-grabbing limb could help snatch space junk orbiting around Earth.
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