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Metal Asteroid Psyche, a Weird Magnetic Space Rock, Explained (Infographic)

Psyche, one of the largest asteroids, is made mostly of metal.
The strange magnetic asteroid could be all that remains of what was once a protoplanet in the early solar system. (Image credit: by Karl Tate, Infographics Artist)

Discovered in 1852, the main-belt asteroid Psyche is unique in that it is believed to be the exposed core of an ancient protoplanet that never completely formed, or whose rocky outer layers were destroyed. It is the most massive known M-type (metallic) asteroid, with a composition of 90-percent iron and nickel, and 10-percent silicate rock — similar to Earth's core.

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Karl Tate
Karl's association with SPACE.com goes back to 2000, when he was hired to produce interactive Flash graphics. Starting in 2010, Karl has been TechMediaNetwork's infographics specialist across all editorial properties.  Before joining SPACE.com, Karl spent 11 years at the New York headquarters of The Associated Press, creating  news graphics for use around the world in newspapers and on the web.  He has a degree in graphic design from Louisiana State University. To find out what his latest project is, you can follow Karl on Google+.