Video: Explaining Earth's magnetic field

November 25, 2013

An introduction to Earth's magnetic field: what it is, where it comes from and what it's used for.

A documentary video from the European Space Agency:

The video will load shortly

Explore further: Satellite Swarm prepares for take-off

Related Stories

ESA SWARMing Earth's magnetic field

November 25, 2013

ESA's three-satellite Swarm constellation was lofted into a near-polar orbit by a Russian Rockot launcher this afternoon. For four years, it will monitor Earth's magnetic field, from the depth of our planet's core to the ...

Physicists monitoring huge solar event (w/ Video)

November 11, 2013

( —The sun's magnetic field is poised to reverse its polarity. The effects of the event, which occurs every 11 years, will ripple throughout the solar system and be closely monitored by Stanford solar physicists.

Swarm launch postponed

October 31, 2013

The launch of ESA's magnetic field mission from Plesetsk, Russia, has been postponed by about a week.

Preparing to launch Swarm

September 20, 2013

With the launch of ESA's Swarm trio set for 14 November, the first satellite has arrived safely at the Plesetsk Cosmodrome in Russia. This new mission will unravel one of the most mysterious aspects of our planet: the magnetic ...

Recommended for you

STEREO—10 years of revolutionary solar views

October 26, 2016

Launched 10 years ago, on Oct. 25, 2006, the twin spacecraft of NASA's STEREO mission – short for Solar and Terrestrial Relations Observatory – have given us unprecedented views of the sun, including the first-ever simultaneous ...

Image: Changing colors in Saturn's pole

October 26, 2016

These two natural color images from NASA's Cassini spacecraft show the changing appearance of Saturn's north polar region between 2012 and 2016.

1 comment

Adjust slider to filter visible comments by rank

Display comments: newest first

1 / 5 (3) Nov 25, 2013
now I know everything

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.