Using laster pointers to map out the universe

Telescope shooting laser towards the skyIf I understand this correctly. When you illuminate an object with a laser, and then move the laser in such a way that the laser point moves faster then light, you observe a certain flashing of light the scientists dub ‘photonic boom’.

Those ‘photonic booms’ apparently could be used to map out the surface of the object. Because those flashes are generated by various phenomena in the universe, they could be used by astronomers to analyze the shapes of distant objects.


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