Astronomy & Astrophysics takes you on a grand tour of the universe. Starting with the night sky visible from your backyard, this track builds systematically through the tools astronomers use, the worlds of our solar system, the life and death of stars, the galaxies that contain them, and the cosmological framework that ties everything together. Each module blends rich visual content, real observational data, and practice quizzes so you develop both conceptual understanding and scientific literacy. By the end you will be able to read an HR diagram, explain why the night sky changes with the seasons, describe the evidence for the Big Bang, and discuss the ultimate fate of the cosmos.
Learn to navigate the sky using coordinate systems, constellations, and the apparent motions caused by Earth's rotation and orbit
Understand the electromagnetic spectrum, how telescopes collect and focus light, and how spectroscopy decodes the universe
Survey the planets, moons, and small bodies of our solar system and understand its formation through the nebular hypothesis
Classify stars by their physical properties, read the Hertzsprung-Russell diagram, and follow stellar evolution from nebula to main sequence
Explore the dramatic end stages of stellar evolution — white dwarfs, supernovae, neutron stars, and black holes
Classify galaxies by shape, explore the structure of our Milky Way, and encounter dark matter and active galaxies
Investigate the origin, structure, and ultimate fate of the universe — from the Big Bang to dark energy
A comprehensive 20-question assessment covering all topics from the Astronomy & Astrophysics track
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