When an exoplanet passes in front of its host star, it blocks some of the star's light, causing a dip in brightness. However, the transit time can vary, giving hints about the planet's gravity and the presence of other planets in the same system.
When an exoplanet passes in front of its host star, it blocks some of the star's light, causing a dip in brightness. However, the transit time can vary, giving hints about the planet's gravity and the presence of other planets in the same system.