There's still a lot we don't know about the moon!

Long lines, being patted down, and having your hands swabbed don't make for a wonderful day, but Michael Aranda explains the machines you encounter in airport security and the science and technology behind them.

In the radio race, one inventor came out ahead while the other was overshadowed. Michael Aranda goes into the history of the radio and the many people who contributed to make the tool we use every day.

Many people avoid using microwave ovens, fearing how it changes the molecular structure of your food, but studies have some evidence that may surprise you.

Hank takes us on a journey to center of the Earth to explain both how the solid core formed and why it is so important for life as we know it.

You probably know about the geomagnetic field that protects the earth from solar storms and radiation. But precision satellites have measured ANOTHER magnetic field coming from Earth, and its signals might hold the key to searching for...

We've already learned a lot about the solar system, but sometimes the most fascinating things are what we DON'T know.

In the early 1800s, Michael Faraday showed us how a changing magnetic field induces an electromotive force, or emf, resulting in an electric current. He also found that electric fields sometimes act like magnetic fields, and developed...

Phil starts the planet-by-planet tour of the solar system right here at home, Earth.

Before moving on from Jupiter to Saturn, we’re going to linger for a moment on Jupiter’s moons. There are 67 known moons, and 4 huge ones that we want to explore in greater detail. Ganymede is the largest - larger, in fact, than any...

Space might seem like an empty place, but the area surrounding Earth is constantly being bombarded by waves of charged particles released by the Sun: The solar wind. Luckily, thanks to Earth's swirling, molten core (and the magnetic...

In this video Paul Andersen explains how the magnetic permeability is the ability of a material to form internal magnetic fields. The magnetic permeability of free space is a constant and is much lower than the magnetic permeability of...

One way to help us live on Mars would be to terraform the planet. Some scientists think we might be able to do that by giving it a new magnetic field!

Given that Earth’s magnetic field helps protect its life-sustaining atmosphere, you might think that the stronger a planet’s magnetic field, the better. But as it turns out, some planets’ relationships with their magnetic fields are a...

There are 118 elements on the periodic table, but it seems like only a handful of them get any attention. But just because you haven't heard of an element doesn't mean that it isn't a vital part of everyday life.

Learn how magnetic bacteria work, and how scientists think they can help technology in the future!

Wanda Diaz Merced studies the light emitted by gamma-ray bursts, the most energetic events in the universe. When she lost her sight and was left without a way to do her science, she had a revelatory insight: the light curves she could no...

You might associate levitation with magic, but science has its own version.

Magnetic fields fill our universe, but here at home we have a very special one that nature uses in a myriad of ways. And further away, other magnetic fields give us fascinating glimpses into the nature of the universe!

Earth’s northern and southern lights are some of the most magical sights on our planet. But they’re not unique to Earth, and aside from being beautiful, auroras can also give us unusual insights into these other worlds.

Our Atmosphere is Escaping

In this final segment on the four fundamental forces of physics, Hank tackles the magnetic force, the second of the two ways in which electromagnetism is apparent in the universe

The magnetic dipole moment is the torque experienced by a material placed in a magnetic field. The magnetic dipole is an intrinsic property at the magnet, domain, atom, and electron level. A magnetic dipole creates magnetic fields that...

In this video Paul Andersen explains how vector addition can be used to determine the electric field of a dipole.