Earths atmosphere

Earth is very special compared to other planets because of its atmosphere. Earths atmosphere is compromised of several different layers covering the earth in a protective blanket. One of these layers is the ozone layer. The ozone layer protects the people and animals of earth from harmful ultraviolet light produced by the sun. The earths atmospheric pressure witch creates high and low pressure systems. This allows for weather and thus less extreme temperatures like on other planets. The other substances in the atmosphere consist of 78% nitrogen, 21% oxygen, and 1% other gases.

Podcast: Death of Stars

space exploration

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The science of rockets - NASA uses a rocket system called "atlas" that has three stages. These stages are called "atlas", "centaur" ant the last stage in witch centaur burns up.

The space program- The Nation Aeronautics and Space Administration (NASA) was begun in 1958. It has had several missions including Apollo 13.

Exploring space today- The international space station is part of exploring space today. to help the people on it NASA have built a robot called "personal satellite assistant".

Using space science science on earth- The NASA program is very good for the economy. Yet they only get 1% of the united states budget money.