What tough spacecraft was the first to orbit the planet closest to the Sun? MESSENGER, of course!
What will this probe show you? What makes rocky Mercury special? Can MESSENGER spot cold areas on a hot planet? Read along to find out!
The Eyes in Space series encourages new readers to expand their knowledge and exercise their imagination. Readers will love the vivid photos, fascinating spacecraft, and weird and wonderful facts. Take an amazing journey through space with the flip of every page.
