"The Devil's Asteroid" by Manly Wade Wellman is a science fiction story that examines what happens to humanity when it is pushed to its limits on a strange asteroid. The story follows Fitzhugh Parr, who has been sent away from Earth by Martians and now lives among other exiles where they are faced with the terrifying effects of reverse evolution that changes people into beasts. Parr tries to take charge among the lost men while battling their animalistic nature and thinking about how to get back home. Along the way, he finds friendship with some of the beast-men. When an opportunity to escape appears, Parr must decide whether to bring his altered friends back to a world that may not accept them. With the arrival of others and new insights, Parr learns about the complexities of loyalty and what it really takes to survive in a world that is not human.

The Devil's Asteroid
By Manly Wade Wellman
Expelled to a strange asteroid, a man must fight devolution, lead his exiled companions, and decide whether it's worth returning home forever changed.
Summary
About the AuthorManly Wade Wellman was an American writer. While his science fiction and fantasy stories appeared in such pulps as Astounding Stories, Startling Stories, Unknown and Strange Stories, Wellman is best remembered as one of the most popular contributors to the legendary Weird Tales and for his fantasy and horror stories set in the Appalachian Mountains, which draw on the native folklore of that region. Karl Edward Wagner referred to him as "the dean of fantasy writers." Wellman also wrote in a wide variety of other genres, including historical fiction, detective fiction, western fiction, juvenile fiction, and non-fiction.
Manly Wade Wellman was an American writer. While his science fiction and fantasy stories appeared in such pulps as Astounding Stories, Startling Stories, Unknown and Strange Stories, Wellman is best remembered as one of the most popular contributors to the legendary Weird Tales and for his fantasy and horror stories set in the Appalachian Mountains, which draw on the native folklore of that region. Karl Edward Wagner referred to him as "the dean of fantasy writers." Wellman also wrote in a wide variety of other genres, including historical fiction, detective fiction, western fiction, juvenile fiction, and non-fiction.