Earths Atmosphere

Earths atmosphere has something called the ozone. The ozone protects earth from the harmful UV rays. The moons atmosphere is a small line as in theres not much of an atmosphere. The moon has lust enough of an atmosphere to keep moving. Earths main atmosphere is used to force the solar wind out, and off of earth.

Poster

moon phases eclipses

http://docs.google.com/Presentation?id=dhhjbxvf_0c7gm7zc8

The Space Program

The Science Of Rockets
Since the late 1950's, NASA has used Atlas rockets to launch probes into space and satellites to orbit Earth. The first stage, simply called Atlas, uses both solid-fuel boosters and liquid-fuel engines to launch the payload into space. The second stage, known as centaur, uses liquid-fuel engines to maneuver into proper orbit. The third stage, is the payload- the satellite or space craft carried by the rocket.

The Space Program
The National Aeronatics and Space Administration (NASA) had began in 1958. The space race began in 1957 when the Soviets launched the satelite Sputnik 1 in to orbit. The United States responded by sppeeding up its own space program. An American effort to land astronauts on the moon was named the Apollo Program.

Exploreing Space Today
Under microgravity conditions, the special robot floats next to an astronaut, using small internal fans to change coarse or move in various directions. NASA has used space shuttles to perform many important tasks. These include taking satellites into orbit, reparing damaged satellites, and carrying astronauts and equipment to and from space stations. A space station provides a place where long-term observations and experiments can be caried out in space. Each space probe has a power system to reduce electricity, a communication system to send and receive signals, and scientific instruments to collect data and perform experiments.

Using Space Science On Earth
Coditions in space that differ from those on Earth include near vaccum,,extreme temperatures, and microgravity. The space program has developed thousands of products that affect many aspects of modern society, including consumer products, new materials, medical devices, and comunications satellites. Satellites are used for communications and for collecting weather data and othether scientific data.