This is the Earth's only natural satellite
Salyut 1
This was the first space probes to take pictures of the Moon in preparation to land men on the Moon
Ranger
This tells a controller how the satellite is functioning
telemetry
United States Marine Corps aviator, engineer, astronaut, businessman, and politician. He was the first American to orbit the Earth, circling it three times in 1962. Following his retirement from NASA, he served from 1974 to 1999 as a Democratic United States Senator from Ohio.
John Glenn
This sub-system provides the boost to get a satellite into orbit
Propulsion system
The first American manned spaceflight program was called this
Project Mercury
This word describes heat energy emitted from the sun that is both good and bad
Radiation
This word refers to the movement or path a satellite takes around a celestial body
Orbit
American astronaut and aeronautical engineer who was the first person to walk on the Moon. He was also a naval aviator, test pilot, and university professor
Neil Armstrong
This person developed the heliocentric theory that placed the sun in the center of the universe
Copernicus
The first American to orbit the Earth
John Glenn
This is used to steer and control the direction of the satellite
Attitude control system
This scientist developed the geocentric theroy
Ptolemy
English physicist, mathematician, astronomer, theologian, and author who is widely recognised as one of the most influential scientists of all time, and a key figure in the scientific revolution. His book Philosophiæ Naturalis Principia Mathematica, first published in 1687, laid the foundations of classical mechanics
Issac Newton
This early scientist gave us a law that stated the orbit of each palnet is an ellipse the the sun at the focus
Kepler
The first astronomer to use the term "satellites" to describe the moons of Jupiter that he could see
Kepler
This provides most of the electricity for the satellite
Solar cells
This scientist developed the Law of Universal Gravitation
Newton
American astronaut, physicist, and engineer. Born in Los Angeles, she joined NASA in 1978 and became the first American woman in space in 1983. Ride was the third woman in space overall, after USSR cosmonauts Valentina Tereshkova and Svetlana Savitskaya.
Sally Ride
Neil Armstrong
This was the first image that NASA's first weather satellite Tiros 1 sent on the same day it was launched
Hurricane
The command and control function of a satellite
She was the first woman in space
Soviet cosmonaut, engineer, and current member of the Russian State Duma. She is the first woman to have flown in space with a solo mission on the Vostok 6 on 16 June 1963.
Valentina Tereshkova