- Asimov On Astronomy, Doubleday, 1974 - Asimov On Astronomy, Anchor, 1975 - Asimov On Astronomy, Bonanza Books, 1979 Just Right, Mar-69, The Magazine of Fantasy and Science Fiction
- The Solar System And Back, Avon/Discus, May-72 - The Solar System And Back, Avon/Discus, May-72 - The Solar System And Back, Doubleday, 1970 Just Say 'No'?, May-90, The Magazine of Fantasy and Science Fiction
- The Secret Of The Universe, Doubleday, 1991 - The Secret Of The Universe, Pinnacle, Nov-92 Just Thirty Years, Oct-79, The Magazine of Fantasy and Science Fiction
- The Sun Shines Bright, Avon/Discus, Jan-83 - The Sun Shines Bright, Doubleday, 1981
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