In late July 1941, Hitler order army Group South to seize the Crimea in order to prevent Soviet air attacks on the Ploesti oilfields in Romania. This vital mission was assigned to weak Eleventh Army under Generaloberst von Manstein. In late September 1941, von Manstein began his initial attacks upon the strong Soviet defences at the Perekop isthmus, and then cleared the heavily fortified Kerch …
If you're going to orbit the Earth, moonwalk, or float in space, you need the right outfit. From helmet to space boots, every part of an astronaut's spacesuit is designed for survival. This reader, developed with Smithsonian's popular Air and Space Museum, provides a close look at the suits, boots, helmets, gloves, and other gear astronauts have worn into space, from the early days of space exp…
This book is for people who are curious about the world around them, but who may be a bit intimidated by science.What Einstein Didn't Know provides intriguing answers to questions such as - Why are some flames blue and others yellow? - How does soap "know" what's dirt? - Why won't oil and water mix? With sections called "Try It" providing forty-eight fun demonstrations that can be performed …