Re: Yes, I'm back

In a message dated 1/21/2003 9:18:19 AM Pacific Standard Time,
and_yo@HOTMAIL.COM writes:


> The rotational periods of Earth, Mars, Jupiter, Saturn, Uranus and Neptune
> are all in the 9-25h range. The much longer rotational periods of Mecury
> and
> Venus are likely due to tidal slowing caused by their proximity to the Sun.
> This has caused at least some astronomers to conclude that this order of
> magnitude is "natural" for the rotational period of a terrestrial or jovian
> planet.
 Jovian? I've heard of terrestrial type and gas giant planets, but the site
doesn't let you create a jovian type. I've never heard of them. Is that a
type of planet of extreme size (in the sense of mass), enough to flatten
anything that lands on the surface, but still made of solid material instead
of being a giant of gas?

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