What scientific method do astronomers use to confirm the existence of Proxima Centauri b?

Answer

The radial velocity method

Scientists confirm the existence of Proxima Centauri b by tracking the slight wobble of its host star caused by the gravitational pull of the orbiting planet. This radial velocity method is utilized because direct photography of such distant, small worlds is currently not feasible with existing observational technology.

What scientific method do astronomers use to confirm the existence of Proxima Centauri b?

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