News tagged with rocky planet

Mercury's magnetic field -- nipped in the bud

( -- Mercury, the smallest of the eight planets with a diameter of 4900 kilometres and the closest to the Sun, looks more like the Moon than the Earth from the outside. It is the only rocky planet that has a global ...

dateDec 23, 2011 in Space Exploration
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Clocking Neptune's spin

( -- By tracking atmospheric features on Neptune, a UA planetary scientist has accurately determined the planet's rotation, a feat that had not been previously achieved for any of the gas planets in our solar ...

dateJun 29, 2011 in Astronomy
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Our unlikely solar system

Recent modeling of solar mass stars with planetary systems, found that a system with four rocky planets and four gas giants in stable orbits – and only a sparsely populated outer belt of planetesimals – has only ...

dateApr 11, 2011 in Astronomy
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