"The Milky Way Galaxy holds 100 to 400 billion stars! Find out fascinating facts out these star-filled space wonders with Velma, including how galaxies form, how they can differ from one another, and why black holes remain a perplexing mystery."-- back cover.

Ailynn Collins has written many books for children, from stories about aliens and monsters, to books about science, space, and the future. These are her favorite subjects. She has an MFA in writing for Children and Young Adults from Hamline University and has spent many years as a teacher. She lives outside Seattle with her family and 5 dogs. When she's not writing, she enjoys participating in dog shows and dog sports.