The National Geographic Magazine, Volume 210, Issues 4-6National Geographic Society., 2006 - Geography |
From inside the book
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Page 50
... planet's mass rapidly grew . Pressures mounted , squeezing the innermost layer of hydrogen so hard that scien- tists believe it turned into a liquid metal - a superb electrical conductor . Currents surging through the metallic hydrogen ...
... planet's mass rapidly grew . Pressures mounted , squeezing the innermost layer of hydrogen so hard that scien- tists believe it turned into a liquid metal - a superb electrical conductor . Currents surging through the metallic hydrogen ...
Page 53
... PLANET G ring Seen from above its north pole in an artist's impression , Saturn resembles a miniature solar system , with rings spanning 165,000 miles ( out to the A ring ) and 56 known moons out to more than 10 million miles from the ...
... PLANET G ring Seen from above its north pole in an artist's impression , Saturn resembles a miniature solar system , with rings spanning 165,000 miles ( out to the A ring ) and 56 known moons out to more than 10 million miles from the ...
Page 60
... planetary build- ing blocks . In violent pileups , they smashed together to create planets , including the infant Earth . In the turmoil , another body , as big as Mars , struck our planet with the energy of trillions of atomic bombs ...
... planetary build- ing blocks . In violent pileups , they smashed together to create planets , including the infant Earth . In the turmoil , another body , as big as Mars , struck our planet with the energy of trillions of atomic bombs ...
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