How are dark bodies detected in space?

bystudin | September 21, 2020 | Education

For this, it is necessary that the given object (planet or black hole) be part of a close binary system, and the second object is a visible star. Due to the movement of both objects around the center of mass, the visible component shows periodic deviations in the celestial sphere. The same method is applied when observing the line spectrum.

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