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Charles Dodgson (1832-1898) was an English mathematician who also happened to be an excellent storyteller. Using the name of Lewis Carroll, he wrote children's books that were full of whimsical nonsense. Among Dodgson's literary creations are such works as Alice's Adventures in Wonderland and Through the Looking-Glass. He was also an excellent photographer.

In response to the pleas of some young friends, Dodgson created word puzzles which came to be known as "doublets." To solve a "doublet," you must change one word into another by going through a series of steps. You may change only one letter at a time. Each change must result in the formation of a new word. The first starry word has been done for you.

  1. Change mass to dust:

  2. Change gas to Sun

  3. Change star to hole

  4. Change core to X-ray

  5. Change heat to glow

  6. Change fuse to burn

  7. Change mass to life

  8. Change spin to glow

  9. Change mass to cool

  10. Change red to hot

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Imagine the Universe is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Alan Smale (Director), within the Astrophysics Science Division (ASD) at NASA's Goddard Space Flight Center.

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Acting Project Leader: Dr. Barbara Mattson
All material on this site has been created and updated between 1997-2012.

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