Find out about the spacecraft that humans have used to travel to the Moon, explore the surface of Venus and Mars, and venture into the Universe beyond. Closer to Earth, discover the satellites that glide across the skies and keep us connected with each other. Machinery is everywhere in our modern world, and even way out in space. Designed by scientists and engineers, the marvelous machines they have created shape our lifestyles and show us how important technology is for us all.