
People watch the launch of a SpaceX Falcon 9 rocket carrying 21 second-generation Starlink satellites from Space Launch Complex 40 at Nasa's Kennedy Space Center, in Cocoa Beach, Florida, on February 27. — AFP
Gaze up at the right time and you might see what looks like a train of stars streaking across a dark sky.
The phenomenon is neither aliens nor a top-secret military project. The lights are commercial satellites that provide broadband Internet service. They are part of growing constellations of such craft in low Earth orbit — within 1,200 miles from Earth.
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