Wednesday, October 29, 2008
Earths Atmosphere
Earths atmosphere is very different from the moon and planets with no atmospheres for many reasons.Earths atmosphere makes conditions on earth suitable for living things.This is why we could not live on any other planet that we know of.Earths atmosphere is made up of nitrogen,oxygen,carbon dioxide,water vapor,and many other gases,as well as particles of liquids and solids.Oxygen is the second most abundant gas in earths atmosphere following nitrogen and is the reason we can breath on earth.The atmosphere keeps most of the earths surface warm by trapping energy from the sun.It also protects living things from dangerous radiation from the sun.Earths atmosphere also protects the earth from being hit by most meteoroids and rocks from outer space.
Wednesday, October 1, 2008
Space Exploration
The Science of Rockets
The most common type of rocket is the atlas rocket.The atlas is most commonly used to launch things into space.Te atlas rocket uses liquid and soiled fuel boosters.The most recent use of the atlas rocket is to launch satellites into orbit for government and commercial purposes.
The Space Program
NASA was invented to explore space.The first NASA mission was to see if humans could survive in space.Apollo 13 was launched on April 11 1970 it looked like it would be the smoothest flight but the whole thing went wrong but they made it back safely home.Since 1972 three ships went to the moon unmanned they took pictures and gave us new information.
Exploring Space To Day
A personal satellite is a little robot that follows astronauts out side the space station.It is small so it can fit in the tightest working station.this is equipped with the latest technology and can alert the astronauts to any problem.
Using Space Science on Earth
The space program takes less than 1% of the US governments funding.For every 1 dollar invested in the space program the economy gets 7 dollars in return.Some people think we should no longer fund the space program.But NASA provides a better understanding of space.The space program also supports many jobs.
The most common type of rocket is the atlas rocket.The atlas is most commonly used to launch things into space.Te atlas rocket uses liquid and soiled fuel boosters.The most recent use of the atlas rocket is to launch satellites into orbit for government and commercial purposes.
The Space Program
NASA was invented to explore space.The first NASA mission was to see if humans could survive in space.Apollo 13 was launched on April 11 1970 it looked like it would be the smoothest flight but the whole thing went wrong but they made it back safely home.Since 1972 three ships went to the moon unmanned they took pictures and gave us new information.
Exploring Space To Day
A personal satellite is a little robot that follows astronauts out side the space station.It is small so it can fit in the tightest working station.this is equipped with the latest technology and can alert the astronauts to any problem.
Using Space Science on Earth
The space program takes less than 1% of the US governments funding.For every 1 dollar invested in the space program the economy gets 7 dollars in return.Some people think we should no longer fund the space program.But NASA provides a better understanding of space.The space program also supports many jobs.
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