Earth's magnetic field, which protects the planet from harmful blasts of solar radiation, is much older than scientists had previously thought. This invisible, protective shield likely existed shortly after the planet formed; a finding that could shed light on why Earth is habitable and Mars is not. Earth's magnetic field helped make life on the planet possible. Without our magnetic field, solar winds would strip away the planet's atmosphere and oceans.

'Magnetic' Discovery May Reveal Why Earth Supports Life and Mars Doesn't

Our magnetic field protects us from blasts of solar radiation & likely existed soon after the planet formed. This may explain why Earth is habitable & Mars is not. Without our magnetic field, solar winds would strip away Earth's atmosphere & oceans.

The northern lights are more formally known as auroras, and are caused by interactions between the solar wind and the Earth's magnetic field.<br />

Back-to-Back Sun Storms May Supercharge Earth's Northern Lights

Magnetic Fields of Venus, Earth and Mars. I love this piece because it reminds me of just how special,fragile and protected Mother Earth is when it comes to having and feeling the full on powerful force of the SUN.

An artist's impression of the magnetic fields of Venus, Earth and Mars interacting with charged particles streaming from the sun. Earth's magnetic field protects it from these atmosphere-stripping particles.

mn:  Using my METHOD, it took me one day to FIND this model, I did NOT MAKE it:  Use the Magnetic Field of Earth to charge an array of Super Powerful UV Lasers shot at a Dish that aims it at the Sun (at least most of it) and ATTENUATES the UV that REACHES the Atmosphere.  THIS is where I want to focus my work now, NOT under a tree in this case...

A Timelapse Of Our Planet's Surprisingly Turbulent Magnetic Field

Earth’s weakening magnetic field: Dramatic dips spotted across the Western Hemisphere could damage satellites

How 4 NASA Satellites Will Study Magnetic Fields of Earth & Sun (Infographic) By Karl Tate, Infographics Artist

How 4 NASA Satellites Will Study Magnetic Fields of Earth & Sun (Infographic) By Karl Tate, Infographics Artist

In case you didn’t know, the universe is a terribly hostile place for most lifeforms. At least, it is if you don’t have proper protection. Take our own star, for example. The Sun gives life to everything on Earth, but it is also a violent inferno that shoots off high energy particles that could seriously disrupt Earth’s natural systems.  Fortunately, for us, our planet has protection. Ultimately, the Earth is encased in a magnetic field, which is generated by the rotating, liquid iron core…

In case you didn’t know, the universe is a terribly hostile place for most lifeforms. At least, it is if you don't have proper protection.

The earth's magnetic field. Almost 800,000 years ago, the poles flipped. Our magnetic field has lost 10% of it's strength over the last 150 years.

Is the Earth magnetic pole shifting? Whale & birds are either beaching themselves or running into objects.

Supercomputer model of Earth's magnetic field.

Earth's 6-Year Twitch Changes Day Length

Supercomputer model of Earth's magnetic field, which is generated by the liquid iron moving around inside Earth.

Earth's Magnetic Field Changing Fast - Strongest Disasters Ahead, Resear...

Earth's Magnetic Field Changing Fast - Strongest Disasters Ahead, Resear...

Earth’s magnetic field could flip within our lifetime – but don’t worry, we should be OK - The Earth’s magnetic field is generated by the movement of molten iron in its outer core, through what’s known as the dynamo theory. Due to reasons we don’t fully understand, something causes the movement of the molten core to change — and thus the north and south poles switch. | ExtremeTech

This summer, the European Space Agency published data that suggested that the Earth's magnetic field could flip -- as in, .

Earth's Magnetic Field

Earth's Magnetic Field

A great way to teach kids about the Earth's magnetic field and how magnets work.

How To Make A Compass For Kids

Earth's Magnetic Field Is about to Flip

Earth's Magnetic Field Is about to Flip

Earth's Magnetic Field

For the first time, scientists have directly mapped Earth's fluctuating magnetic field and resulting electrical currents to aurora, thanks to northern lights observations from NASA's THEMIS mission.

Earth's magnetosphere. Image credit: NASA http://www.universetoday.com/27005/earths-magnetic-field/

Solar winds help create the magnificent colors of the aurora.

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