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Surrounded by radiation belts, Earth is being protected by an invisible shield that stops high-speed “killer electrons,” scientists have found after taking a closer look at the Van Allen belt 7,200 miles above our planet.

Scientists have discovered an invisible shield roughly miles above Earth that blocks so-called “killer electrons,” which can fry satellites and degrade space systems during intense solar storms. - Illustration by Andy Kale, University of Alberta.

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.

Inside a Neutron Star (Infographic) by Karl Tate, Infographics Artist

A spectacular Hubble Space Telescope image …

A spectacular Hubble Space Telescope image reveals the heart of the Lagoon Nebula. Seen as a massive cloud of glowing dust and gas, bombarded by the energetic radiation of new stars, this placid name hides a dramatic reality. The Advanced Camera for.

We got to the moon with a computer less powerful than your cell phone. Humanity is truly incredible.

Space solar system meme - Funny and True! We got to the moon with a computer less powerful than your cell phone!

Ocean Worlds (oceans in Solar System)

Earth isn’t the only ocean world in our solar system. Oceans could exist in diverse forms on moons and dwarf planets, offering clues in the quest to discover life beyond our home planet.

NASA Gov Doc: NASA’s Van Allen Probes Spot an Impenetrable Barrier in Space

NASA Gov Doc: NASA’s Van Allen Probes Spot an Impenetrable Barrier in Space

Ondes gravitationnelles

How Gravitational Waves Work (Infographic) By Karl Tate, Infographics Artist March 2014

a breathing earth

A breathing Earth. Animated gif of Earth’s ice and vegetation cycle over a year.

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