What geometric constraint is fundamental for detecting an exoplanet using the transit method?

Answer

The orbital plane must be oriented nearly edge-on from Earth's perspective.

If the planet's orbit is significantly tilted, it will pass above or below the star from our vantage point, preventing the required light blockage from being observed.

What geometric constraint is fundamental for detecting an exoplanet using the transit method?

#Videos

How to Detect EXOPLANETS - The Transit Method - YouTube

astronomymethodTransitdetection