What was the primary goal of the Kepler mission?

• A. To study solar flares and their effects
• B. To discover Earth-sized exoplanets
• C. To map the surface of Mars
• D. To develop new rocket technologies

Answer: (B)

The primary goal of the Kepler mission was to discover Earth-sized exoplanets. Launched in 2009, the Kepler Space Telescope specifically aimed to identify planets orbiting other stars, particularly those located in the habitable zone where conditions might be right for liquid water to exist. This mission utilized the transit method, which involves detecting the periodic dimming of a star as a planet passes in front of it. By focusing on Earth-sized and potentially habitable planets, Kepler significantly expanded our understanding of the diversity of planetary systems in our galaxy, including the prevalence of Earth-like worlds. This exploration has profound implications for the search for extraterrestrial life and the understanding of how our own Solar System fits into the larger cosmic context.

In contrast, the other choices do not align with the mission's focus. Studying solar flares relates more to solar physics, mapping Mars concerns planetary geology, and developing new rocket technologies addresses advancements in space travel rather than planetary discovery.