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Electricity will not exactly be unlimited in space. Fuel cells change two elements—oxygen and hydrogen—into electricity. So ... , we will always have electricity as long as there is sunlight. Nuclear energy lasts a long time. But we can't say it is unlimited, because it will depend on how much we use. The ... use at any one time; and how much fuel we have. We can't have unlimited fuel, because fuel has weight and mass, and that takes up room. So, probably each ...

It is both warm and cold in space. Temperature is a measure of heat energy. In space there is no air so heat transports by radiation—for example, you feel warmth when you ... a red-hot stove. The Sun is the major source of heat in space. The Earth is also a major source of heat in space, since it reflects sunlight. ---- Answer provided by Robert ...

It is very difficult to prepare to go to space. Not only are there the mental and ... spoke English. They were kind enough to do so and as they say, the rest is history. ---- Answer provided by Dennis Tito Image:K2S logosmall.jpg Question and Answer extracted from ...

... find other solar systems with other planets around other stars in our galaxy. The possibility is present that there may be other worlds in other solar systems that are suitable for ...

... attachment was used to suck off the soapy water and rinse water from our bodies. It worked quite well but took too much time—an hour and a half for ...

Absolutely yes. In fact there could be some life forms right here living in our own solar system. Mars was once covered with water, so there may be something living there now or fossils from the past. Many of the moons show signs of containing deep oceans that could possibly harbor life. These same conditions could easily exist on some distant planet orbiting another star. ---- Answer provided ...

... by pulling yourself along the insides of the spaceship? Is it like flying like a bird or swimming like a fish, or both? It is not hard to adapt to floating, over a period of a day or so, since your body really adapts to weightlessness. It is very easy to move around. In fact, with three dimensions instead of two in which ... moving in the correct direction, and then you float to where you want to go. It's really like flying, not like swimming. ---- Answer provided by Byron Lichtenberg, Ph.D. Image ...

... bright in the morning and evening skies that it is almost as easy to see as the Sun and Moon. Venus is the only object—other than the Moon—that can ... both in daytime and nighttime on Earth. For that reason, it is often called the morning star or evening star. At night, it is the brightest star-like object in the sky. ---- Answer provided ...

A space shuttle could be any size so long as it can be launched from Earth. The limiting factor usually is the lift capability of the booster—in the case of ... .5 million pounds at lift off, and the total boost thrust is about 7.8 million pounds. After the orbiter lands, it weighs about 230,000 pounds, depending on how much of the payload is returned. (Ref.1) Ref 1.NASA, National Space Transportation System ...

... in space; however, the majority of it has already been captured gravitationally by stars, planets, or other celestial bodies. So space is almost a perfect vacuum, but gas and dust particles do ... were to compare the amount of gas in interstellar space to the air we breathe, it would be like "one marble in a box five miles on a side compared to ... , there isn't very much oxygen in outer space, but there is some. And the reason there isn't more is simply that the gravity of all the other various celestial objects ...

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