"Nightfall" story writer

• Isaac who wrote himself into "Murder at the ABA"
• Sci-fi author who was also a biochemistry professor
• One of the Big Three of science fiction
• "The End of Eternity" author
• "Those people who think they know everything are a great annoyance to those of us who do" quipster
• "The Solar System and Back" author Isaac
• "Foundation Trilogy" writer
• SF writer acts like one with film that is withdrawn
• "Nemesis" novelist

Wikipedia Word definitions in Wikipedia
Asimov Crater is an impact crater in the Noachis quadrangle of Mars , located at 47.0° S and 355.05° W. It is 84.0 km in diameter and was named after Isaac Asimov (1920–1992), an American biochemist and writer. Wikiasimov.jpg|Western side of Asimov crater, ...