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Electric Resistance May Make Hot Jupiters Puffy

21 Sep , 2010 by

One of the surprises coming from the discoveries of the class of exoplanets known as “Hot Jupiters” is that they are puffed up beyond what would be expected from their temperature alone. The interpretation of these inflated radii is that extra energy must be being deposited in the regions of the atmosphere with large amounts […]

Radius of the Planets

10 Aug , 2009 by

[/caption] One way to measure the size of the planets is by radius. Radius is the measurement from the center of an object to the edge of it. Mercury is the smallest planet with a radius of only 2,440 km at its equator. Mercury is not that much larger than the Moon, and it is […]

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