Composition of Neptune
Name: bob w whitbeck
Date: 1993 - 1999
What is Neptune made of?
Neptune, like Jupiter, Saturn, and Uranus, is a so-called
"gas giant" planet. They are made of mostly hydrogen, methane,
ammonia, and some helium...
When I was younger (much younger!) I found it amusing to invent
palindromes that contained the names of the planets:
"Neptune? NO, one nut pen."
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Update: June 2012