On any alien world, there would have to be some source of energy to sustain life. Complex molecules - Living things on Earth are organized and made of complex, carbon-based molecules that carry out biochemical functions. Carbon is a versatile atom that can form bonds with up to four other...
During a spacewalk, an astronaut must wear a space suit -- what NASA calls an extravehicular mobility unit (EMU) -- to protect and sustain him or her in the vacuum of outer space. Each EMU has a hard upper torso, a lower torso assembly and legs. A portable life support system, or ...
Fedorov believed that if death was the ultimate evil to avoid, the highest good would be to solve it, with the end goal of resurrecting everyone who had ever died; the only way to sustain this exponential growth was unending expansion by whatever means necessary. Failure to do so ...
Shiner:The big question is: “Where did life come from on Earth?” And all of NASA’s exploration, almost all in the planetary system, has been directed toward that. All of the Mars rovers are looking for the same thing. They’re on Mars performing tests with their own litt...
It makes sense to live this way on Mars, where the natural environment doesn't support human life. There, scientists would have to artificially sustain any Earth life. But why live this way in one of Earth's own temperate zones? You probably won't notice anyone living in the hull of a...
“The citizens of space habitats…will need to subordinate their individual freedoms to the pure needs of the technology’s ability to sustain life.” When the geologist decided to finish her life on Mars, she accepted these personal sacrifices, just as she resigned herself to the tissue ...
The event that set the Martian climate on its inexorable course to becoming the dry, dusty world it is today was the cooling of its metallic core and the subsequent death of its magnetosphere. Mars' small size and distance from the sun meant that it didn't have enough heat to sustain the...
How does the energy from the Sun transfer through living organisms on Earth? How do greenhouse gases work? How does Earth?s atmosphere help it to sustain life? How does the Antarctic circumpolar current help keep Antarctica frozen? How does solar energy drive the water cycle?
The event that set the Martian climate on its inexorable course to becoming the dry, dusty world it is today was the cooling of its metallic core and the subsequent death of its magnetosphere. Mars' small size and distance from the sun meant that it didn't have enough heat to sustain the...
orbit - life in space re-entry landing A typical shuttle mission lasts seven to eight days, but can extend to as much as 14 days depending upon the objectives of the mission. Let's look at the stages of a mission one by one. Learn More on the Discovery Channel The Hubble Space Telesc...