ASTROBIOLOGY: Travel with a visionary new science on a search for life in space. Combining the disciplines of astronomy, biology, and geology, a diverse group of scientists join forces to define life on Earth, and explore what kinds of life may exist on other planets.
SPACE TRAVEL: Explore a bizarre array of technologies proposed by scientists in the hope of traveling faster through space, from spacecraft sporting sails that catch laser beams, to propulsion engines powered by a bizarre entity known as anti-matter.
COLONIZING SPACE: Can we? Will we? Should we? Experts explain the latest developments in the ultimate space mission to establish a space colony on Mars including how they plan to grow food in space, recycle wastewater from sweat and urine, and introduce greenhouse gases to revive the red planet and make it more habitable for humans.
LIVING IN SPACE: When mankind eventually leaves the cradle of Earth and ventures into the uncharted territories of the cosmos, where, and what form, will our new homes take? How will we grow food and what will our spacesuits look like? Find out how humans will eat, travel and live...in space.
|Average Distance from Sun||93 million miles||142 million miles|
|Diameter||7,926 miles||4,220 miles|
|Tilt of Axis||23.5 degrees||25 degrees|
|Length of Year||365.25 Days||687 Earth Days|
|Length of Day||23 hours 56 minutes||24 hours 37 minutes|
|Gravity||2.66 times that of Mars||0.375 that of Earth|
|Temperature||Average 57 degrees F||Average -81 degrees F|
|Atmosphere||nitrogen, oxygen, argon, others||mostly carbon dioxide, some water vapor|
|Number of Moons||1||2|
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