Examines the planet Mars, discussing its surface, climate, formation, and exploration.The Sojourner rover spent three months rolling around the landing site. It had chemical sniffers to analyze rocks and 3-D cameras. ... DOWN TO THE SURFACE Many people were disappointed that the Mariner missions showed Mars was a dead world more like ... The next thing to do was get a robot probe to land on Mars.
|Publisher||:||The Rosen Publishing Group - 2009-08-15|