Embark on a cosmic journey with “Fundamentals of Astronomy, 2nd Edition.” This comprehensive textbook offers a clear, foundational understanding of astronomy, from ancient celestial mechanics and reference systems to cutting-edge VLBI, Hipparcos, and GAIA satellite data. Explore concepts of general relativity, black holes, planetary ephemerides, and extrasolar planet detection methods like radial velocity and transits. Delve into photometry, spectroscopy, and polarimetry, considering atmospheric influences. Perfect for undergraduate and graduate students in astronomy, astrophysics, mathematics, and engineering, this edition is updated with the latest IAU/IERS resolutions and features historical context. Enhance your learning with supplementary notes and exercises.