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... of about 10,000 years until they were tens of miles across. Then, over the next tens of millions of years, these small planetisimals collided and combined to form the planets we ... and south poles. We strongly suspect that water is present on many of the other planets in our solar system, but have not physically confirmed its existence. Because oxygen and hydrogen ... atmospheres that are dense enough to hold hydrogen, oxygen, and other gases around the planet. On those planets, unless water or water-ice is in cold-traps or regions hidden from their ...

Planetary atmospheres differ from each other for a number of reasons. Those planets closer to the Sun receive more sunlight which can drive out the lighter gases like ... helium, leaving heavier gases like oxygen, carbon dioxide and nitrogen. Volcanoes can also change a planet's atmosphere by releasing large amounts of new gas. The Earth is unique because it ...

In the past, robots did things humans couldn't, such as going to different planets in the solar system. They still do that work today, but they also help humans. ... helping astronauts is the way of the future. Humans need to be there to do what humans do best—think and respond. Robots, on the other hand will always be ...

... you set off today, you would be about sixty years old by the time you got back and would have missed quite a bit of what is happening back here. ---- Answer provided ...

... a range of different orbits. A typical rocket launch of a communications satellite will cost about $100 million, while the satellite itself might cost twice as much. ---- Answer provided by Derek ...

... the balls of dust and gas to rotate, which in turn caused the newly formed planets to move around the Sun, and also to spin. ---- Answer provided by Ed Frederick, Ph ... /For%20Kids/KidstoSpace.html Click here Category:Kids To Space Category:Kids To Space - PLANETS

... gets very, very cold in the vacuum of space. Loose-fitting and comfortable clothing is what you will need. Synthetic clothing is preferred to some of the other materials. ---- Answer provided ...

Very young children will have to be patient and people with some medical conditions, like high blood pressure or heart problems, might also have to remain on the ground. Hopefully, around 80 percent of people who want to travel to space will be fit and healthy enough to go. ---- Answer provided by Sir Richard Branson & Jim Zebrowski Image:K2S logosmall.jpg Question and Answer ...

Space travelers should not be sick in any way, should be in good physical condition, well rested, not dehydrated, and have no injuries. They should also be in good mental health. ---- Answer provided by Col. USAF Dr. Richard S. Williams Image:K2S logosmall.jpg Question and Answer extracted from the book Kids to Space - by Lonnie Schorer Image:9781894959421. ...

I'm sure before you go you will have a list of everything that will be provided as well as everything you will need to take. ---- Answer provided by Roger Crouch, Ph.D. Image:K2S logosmall.jpg Question and Answer extracted from the book Kids to Space - by Lonnie Schorer Image:9781894959421.jpg '''Buy This Book''' http://www.apogeebooks.com/Books/For%20Kids ...

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