1. Humans on the Moon

2. Neil Armstrong Edwin E. Aldrin July 20, 1969 (Apollo 11)

3. Pete Conrad Francis Gordon November 14, 1969 (Apollo 12) La Vern Bean

4. James Lovell Fred Haise John Swigert April 11, 1970 (Apollo 13)

5. Alan Shepard Edgar Mitchell January 31,1971 (Apollo 14)

6. Scott Altman James Irwin Alfred Worden July 26, 1971 (Apollo 15)

7. Charles Moss Duke Kenneth Matingly April 16,1972 (Apollo 16)

8. Eugene Cernan Harrison Schmitt December 6-19, 1972 ( Apollo 17)

9. Artificial Satellites

10. Satellite  refers to a small object or body that revolves around a larger astronomical object.

11.  any artificial object that revolves around a larger astronomical object is called an artificial satellite.  there are hundreds of artificial satellites circling the Earth.  they are used for communication, weather study, navigation, military observation and other purposes.  scientific research satellites have been launched into orbit around the moon, Venus, Mars and the Sun.

12. Classifications of Satellites There are 3 general classifications of satellites: Communication satellites Environmental satellites Navigation satellites

13. Communication Satellites  it provide communication over long distances by reflecting or relaying radio signals between places of Earth or between satellites.  There are currently hundreds of communications satellites in orbit around the Earth, providing transmission of television signals, telephone conversations and digital data.

14. Environmental Satellites  observe the Earth and atmosphere and transmit images for a variety of purposes. Daily transmissions of temperature and cloud patterns are provided by weather satellites.  one type of this is the Synchronous Meteorological Satellite (SMS). From stationary orbit, it sends pictures of a large area of the Earth's surface at 30-minutes intervals.

15. Navigation Satellites  provide a known observation point orbiting the Earth, that when observed by ships and submarines, can fix the vessel’s position within a few yards.  by knowing the position of several satellites from their signals, it is possible to determine the exact location of a ship on Earth.

16. The Solar System

17.  The solar system is located in one of the spiral arms of the Milky Way galaxy.  It consists of a star, which is the sun, the eight (8) known planets, dozens of known satellites and a huge number of small objects that range from microscopic dust particles to large objects such as meteors and asteroids.

18. Thank You..