When observing an Earth-sized planet, around which type of star is the transit signal considerably deeper and easier to measure?

Answer

A small M-dwarf star.

For a planet of a fixed size, the ratio of the blocked light to the total light is much greater when the host star is smaller, leading to a deeper and more easily distinguished signal.

When observing an Earth-sized planet, around which type of star is the transit signal considerably deeper and easier to measure?

#Videos

How to Detect EXOPLANETS - The Transit Method - YouTube

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