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Ken Croswell, Ph.D
Audiobooks by Ken Croswell, Ph.D
Exploding Stars Turn Red: Two stars merge into one- and explode in a red flash. Ring Around the Asteroid Rating: 0 out of 5 stars0 ratingsNext Stop, Pluto!: This month, a speeding spacecraft will zoom past the farthest world yet. Rating: 0 out of 5 stars0 ratings