The Eclipse Method (also called the Secondary Eclipse Method) is a technique used to study exoplanets by observing how their light changes when they pass behind their star.
How It Works:
Normally, we see both the star’s light and the faint glow of the exoplanet (from reflected starlight or its own heat).
When the exoplanet moves behind the star (a secondary eclipse), the total brightness drops slightly because the planet's light is temporarily blocked.
By comparing the light before and during the eclipse, scientists can isolate the planet’s contribution, allowing them to analyze its temperature, atmosphere, and composition.