This video is answering the question of what are the poles on a magnet.

If you're curious about inductors and how they work, then this is the video for you! In this video, we'll explore the basics of inductors and their role in electrical engineering.

The sun is always changing and NASA's Solar Dynamics Observatory is always watching. Launched on Feb. 11, 2010, SDO keeps a 24-hour eye on the entire disk of the sun, with a prime view of the graceful dance of solar material...

NASA's Goddard Space Flight Center in Greenbelt, Maryland, is home to the nation's largest organization of scientists, engineers and technologists who build spacecraft, instruments and new technology to study Earth, the...

For the first time, using NASA's Solar Terrestrial Relations Observatory, or STEREO, scientists have imaged the edge of the sun and described that transition – from which the solar wind blows. Defining the details of this...

NASA’s THEMIS mission has overturned a longstanding belief about the interaction between solar particles and Earth’s protective magnetic field. This new discovery could help scientists predict when the solar storms that can...

Have you ever wondered how multispeed pumps work? In this video, we'll explain how multispeed pumps work

Have you ever wondered what happens when you bring a magnet near 5000 degree molten Iron? Does it attract? Or repel? Maybe it create cool shapes. But most importantly... DOES IT EXPLODE?!



I set off thermite over a very large...

A mysterious anomaly in the Earth’s magnetic field that stretches from South America to Africa is spreading.

Dr. David Sibeck explains the instruments on the twin Van Allen Probes (formerly the Radiation Belt Storm Probe, RBSP).



The Van Allen Probes will explore the Van Allen Radiation Belts in the Earth's magnetosphere. The...

Dean Pesnell, the SDO Project Scientist, explains how the Helioseismic and Magnetic Imager (HMI) instrument will allow us to see activity inside the sun and even on the other side of the sun.

This video is available for download...

NASA satellites use very sensitive devices called magnetometers to measure the magnetic fields of planets. Like very sensitive compasses, these devices can measure both direction and strength of planetary magnetic fields. Learn more...

This video features two model runs. One looks at a moderate coronal mass ejection (CME) from 2006. The second run examines the consequences of a large coronal mass ejection, such as The Carrington-Class CME of 1859. These...

How do scientists plan to get astronauts to Mars when space radiation is so strong? What can be done about it?

NASA scientists answer some common questions about the sun, space weather, and how they affect the Earth. This is a two-part series.



Part One

addresses:

1. Wh

at is space weather?

2. Wh

at are...

Learn how stepper motor works and the different types in this video on stepper motor basics, covering permanent magnet stepper motor, variable reluctance stepper motor, hybrid stepper motor, the rotational magnetic field as well as the...

Five years after NASA’s MAVEN spacecraft entered into orbit around Mars, data from the mission has led to the creation of a map of electric current systems in the Martian atmosphere....

We start our “Gravity Assist” virtual tour of the solar system with – where else – the Sun! Jim is joined by Project Scientist Dr. Nicky Fox of the Johns Hopkins University Applied Physics Lab to talk about our fascinating star and...

For the first time in history, a spacecraft has touched the Sun. NASA’s Parker Solar Probe has now flown through the Sun’s upper atmosphere – the corona – and sampled particles and magnetic fields there....

Our sun's adolescence was cooler than today, but stormy—and new evidence shows that these tempests may have been just the key to seeding life as we know it on Earth.



Credit: NASA's Goddard Space Flight Center/Joy Ng...

Simulation courtesy of J. Raeder/UNH.



This short video features commentary by David Sibeck, project scientist for the THEMIS mission, discussing a visualization of reconnecti

on fronts.

Taking advantage of an...

The Solar Dynamics Observatory is designed to help us understand the Sun's influence on Earth and Near-Earth space by studying the solar atmosphere on small scales of space and time and in many wavelengths simultaneously. Dean Pesnell,...

Learn about the features of the ionosphere! This little-explored region exists between space and Earth. It is home to the aurora, the international space station, a variety of satellites, and radio communication waves. We...

This short program overview for NASA's heliophysics division explains how NASA studies the sun--and more importantly--how it affects our daily lives.<b<br/>r/>

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