Prepare to be amazed by these two intriguing courses which explore countless mysteries about the ground beneath your feet and the stars above your head.

In the 48 exciting lectures of How the Earth Works, witness the entire history of our planet unfold in spectacular detail, learning what the Earth is made of, where it came from, and—above all—how it works. This unforgettable course is an astonishing journey through time and space. From the big bang to small geological forces, you explore the fascinating processes involved in our planet's daily life. You also discover insights into volcanoes, the rock cycle, tsunamis, the ocean seafloor, and other natural phenomena. An international innovator in seismology and geophysical education, award-winning Professor Michael E. Wysession provides you with a breathtaking, comprehensive picture of our remarkable home.

Then, investigate the wonders of astronomy in Understanding the Universe: An Introduction to Astronomy, 2nd Edition. This engrossing 96-lecture course is all you need to complete your picture of where our universe stands today. With the guidance of award-winning Professor Alex Filippenko, you survey the main concepts, methods, and discoveries in this field—from the constellations drawn by ancient civilizations to the latest images offered by telescopes probing the farthest reaches of space. An unrivaled opportunity to experience a full-year introductory course in astronomy, Understanding the Universe will help you feel at more home in our wondrous universe.