What holds them together? Do any more of them have solar systems with tiny planets like ours? AND... COULD THEY HAVE LIFE? If you listen closely, the universe is always speaking to you. The vast expanse of the cosmos holds many untold secrets. Full of strange and inscrutable forces, it has baffled scientists over the centuries. The Mysteries of the Universe series tackles the astronomical and physical phenomena that continue to puzzle even today. With accessible examples, stunning illustrations and interesting side notes, this book attempts to illuminate some of the more obscure matters in space.