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Imagine a vast shopping mall parking lot with thousands of individual parking spots and internal lanes (representing road segments within a cluster). No matter how complex it is inside, there are usually only a few key exits to the main roads. Our goal was to identify these natural "exits" for each map cluster. For instance, the complex road network around Amsterdam Airport Schiphol (see on OpenStreetMap) has many internal roads but limited primary access points.
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"We've been seeing some families come in for years," says Twig's vice-president Ben Hartwig. "Cases get passed down and the next family member gets to bring them in.
The rocket began moving at 07:04 local time (12:04 GMT) and arrived at Launch Pad 39B at the Kennedy Space Center at 18:41 local time (23:42 GMT).