Explore the fascinating world of extrasolar planets in this comprehensive lecture from the "Astronomy: Exploring Space and Time" course. Delve into various methods of detecting and imaging exoplanets, including Doppler spectroscopy and transit observations. Learn how astronomers characterize these distant worlds and search for potentially habitable planets. Discover the groundbreaking Kepler mission and its impact on our understanding of planetary systems. Investigate the concept of habitable zones and the potential biomarkers that could indicate the presence of life on other planets. Gain insights into the latest developments in the search for habitable worlds beyond our solar system.