| http://www.w3.org/ns/prov#value | - Neptune may have a thin cloud layer at an altitude of so-and-so.It reads more like a (good) textbook or a (interesting) lecture than anything else but it is well organized and a good way to bring yourself up to speed on the few measurements we have of the outer planets.The second half of the book is a primer on how to observe the planets with a telescope but it is neither clear or encouraging for t
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