An email to a spokesman for SpaceX was not returned Saturday, but astronomy experts said the number of lights in quick succession and their distance from Earth made them easily identifiable as Starlink satellites for those who are used to seeing them.
Fienberg said the satellites that are being launched in large groups called constellations string together when they orbit, especially right after launching. The strings get smaller as time goes on. But prior to recent years, there were maybe a few hundred satellites total orbiting Earth, mostly visible as individual lights moving across the sky, Fienberg said. The other handful of companies that are planning to or have launched the satellite constellations have not launched recently and largely pushed them into orbit at a farther distance from Earth, he said.
Fienberg said there is no real regulation of light pollution from satellites, but SpaceX has voluntarily worked to mitigate that by creating visors that dampen the satellites' reflection of sunlight. They've made significant progress in just two years, he said, but many hope that the satellites will some day be at such a low magnitude that they will not be visible to the naked eye even at dusk or dawn.
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