How to cast a wider net for tracking space junk

Laser ranging only gives you a location window that’s up to several thousand kilometers in distance. For better predictions, debris trackers can also measure the reflection of sunlight off these objects, which can be used to narrow those windows to just a few meters. But these sunlight reflections can only be observed around dawn or twilight, when the ground stations are still dark but the satellites themselves are illuminated.

A team of European researchers think they’ve finally gotten around this problem, according to a new paper published in Nature Communications. A team led by Michael Steindorfer, a space debris

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