Mars is the planet in our solar system thought to be most like Earth. The Martian period rotation is 24 hours, 37 minutes, and its angle tilt with respect to it

Perminov was the leading designer for Mars and Venus spacecraft at the Soviet Lavochkin design bureau in the early days of Martian exploration. In addition to c

This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant mark

Covering the first five decades of the exploration of Mars, this atlas is the most detailed visual reference available. It brings together, for the first time,

The airplane ranks as one of history's most ingenious and phenomenal inventions. It has surely been one of the most world changing. How ideas about aerodynamics