Satellite: sputnik

history

• Sputnik I was launched by the Soviet Union on October 4, 1957
• It looks like a basketball and weighs 183 pounds
• About 98 minutes it will orbit around Earth
• Some had fear that Sputnik I could carry nuclear weapons. 
• Sputnik II had to carry a heavier payload and a dog too.        

Definition

• It is the first satelliate
• A series of any Earth orbiting spacecraft 
• Launched by the Soviet Union
• Orbited until the 1958 when it was entered againin Earth atomsphere
• means companion

Purpose of sputnik

• It was a contribution to International Geo. Year 1957-1958
• It provided an opportunity for the meteriod detection
• The losses of the inside pressure of the meteriod would be evidence of temp
• Can be seen in the museums

discovered

• Discovered the Earths radiation belts all around
• It was named after James Van Allen, after princpal investigators

consist Of

• Power Supply- 3 silver zinc batteries
• 2 batteries goes to the radio transmitter
• 1 battery powers the temperature system regulation
• Satellite carries 2 antennas 

Limitation

• I am not sure about the limitation

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