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We're very lucky that we have one. None of the other inner planets of the solar system are blessed with such a large companion, and it's thought to have played a vital role in the rise of life on Earth. There have been many theories as to how the Moon came to be in our orbit. Was it a wanderer from ...

At some point, we will have exhausted Earth's resources and mankind will need to expand the reaches of human civilization to survive. To ensure we're ready for that, we need to learn ... psyche. We also need to develop self-sustaining life support systems that will reduce, and eventually eliminate, the need for re-supply from Earth, allowing us to complete spaceflights of a thousand ...

... is propelled by propellants. Propellants are usually made up of two materials—a fuel and an oxidizer, termed bi-propellants. Various types of fuels and oxidizers may be ...

The ozone layer extends from about 6 miles to 60 miles above the Earth's surface. Ozone molecules contain three oxygen atoms. Ultraviolet light from the Sun breaks one oxygen molecule into two separate oxygen atoms. One of these atoms combines with another oxygen molecule to form ozone. ---- Answer provided by Robert P. McCoy, Ph.D. Image:K2S logosmall.jpg Question and Answer ...

... curious—as a species, we have always pushed the envelope of exploration whether it be exploring new lands on Earth or diving to explore the deepest abyss in the oceans. We have a need to know and to understand our world and as a result hopefully to better understand ourselves Everything you see around you came into being as a result of stars ... after the stars end their lives. This is why Dr. Carl Sagan called us "third generation star stuff". Is it any wonder that we want to go back into space and explore ...

... to possess a moon, named Neith, which appeared in occasional sightings and reports by astronomers from 1672 until 1892. These sightings have since been discredited and we now know Venus does not have a moon. ---- Answer provided ...

... to explain or guess why we exist and no single answer satisfies every person A physicist or other scientist might give a very simple answer: she or he might say that we exist because the ... of on Earth need liquid water in order to survive. That means we wouldn't exist if we were not near a star like the Sun. The Sun keeps the water on Earth ... reactions. But now we have to explain how stars exist You can see that the question gets bigger and bigger. All I've really described is how we exist, not why we exist. There is ...

We have departments that determine the right technology necessary for the current mission. We usually are not that far from the right technology. It is either stowed aboard the ... spaceflight, or even remove it from just living day to day. But we do live reasonably safe lives if we obey all the rules our parents and teachers provide us, just as spaceflight ... the astronauts stated, "I think we explore because it's the right thing to do to learn. We've always been explorers. It's in our nature as a people to explore beyond the ...

This book, Kids to Space: A Space Traveler's Guide, is a private spaceflight guide Other books that we recommend before your flight are The Hitchhikers Guide to the Galaxy by Douglas Adams ... you board an airplane—and how to have a great time, which probably you already know how to do. Any training would help you do those two things. Before you leave you won ... for fun you might want to learn a little more about the spaceship you are on, how it works, and what cool things you can do while you are out in space ...

As long as you stay inside your spacecraft, you do not need a spacesuit. Your spacecraft acts as your spacesuit and protects you from the space environment. However, ...

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