NOVA Season 31 Episode 7 Magnetic Storm

In Magnetic Storm, NOVA takes an in-depth look at the powerful forces of magnetic fields and how they affect life on Earth. The program explores the complexities of these fields, including how they form and how they interact with other phenomena in space.

To begin, the show takes us on a journey to the sun where massive eruptions, known as coronal mass ejections (CMEs), can have a significant impact on life on Earth. These ejections are driven by the sun's magnetic field and can cause blackouts, disrupt communication systems, and even pose a risk to astronauts. We see firsthand the impact of a CME on Earth, and how scientists are working to predict and understand these events.

Moving beyond the sun, the program delves into the mysteries of Earth's magnetic field. We learn about the Earth's core and how it generates our planet's magnetic field. This field is essential to life, as it helps to shield us from harmful radiation and particles from space. But the show reveals that this field is not static, and that it is constantly changing. Scientists use satellite data and ground observations to track these changes, and we see how this information is being used to better understand the field and its impact on life on Earth.

The program also explores the impact of magnetic fields on animals, particularly on the amazing ability of some animals to navigate using the Earth's magnetic field. We see how migratory birds, sea turtles, and even some insects are able to detect the Earth's magnetic field and use it to navigate across the globe. Scientists are still trying to understand how these animals are able to sense the magnetic field, and what implications this may have for humans.

Throughout the program, we meet scientists and researchers who are working to understand the complexities of magnetic fields. We see firsthand the challenges they face, and the cutting-edge technology they use to gather and analyze data. We also learn about the fascinating history of magnetic research, from the discoveries of early scientists like William Gilbert to the groundbreaking work of modern-day researchers.

By the end of the program, it is clear that magnetic fields play a crucial role in our world, from keeping us safe from harmful solar radiation to helping animals navigate across vast distances. The show leaves viewers with a deeper appreciation for the power and complexity of these fields and the important role they play in shaping our world.