Mrs Whatsit is first described as an elderly woman wrapped in layers of clothes and first appears in chapter one. Charles Wallace, a five year old boy in the book, found her in a 'haunted house' in the woods, where she has been living with her two friends, Mrs Who and Mrs Which. Mrs Whatsit is the youngest of the Mrs W's (despite being over 2 billion years old), and the best of the three at interacting with the children. In Chapter Four, the group (Charles Wallace, Calvin, and Meg) witnesses the physical transformation of Mrs Whatsit into a centaur-like winged being on the planet Uriel. Mrs Whatsit is also revealed to have been a star that sacrificed itself by exploding in order to destroy a section of the Black Thing.
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